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OCT 25

CVAR YPN's Run For A Reason Halloween 5K

Modesto, CA
🎃 READY TO RUN FOR A REASON? Join us for the CVAR YPN Run for a Reason Halloween 5k Sunday, October 25, 2026 at East La Loma Park in Modesto benefiting CASA of Stanislaus County and local children in foster care. ❤️ RACE DAY SCHEDULE🎟 Check In: 7:30 AM🔥 Group Stretch: 8:45 AM with Orangetheory Fitness Modesto🏃 5K Starts: 9:00 AM🏆 Awards: 10:00 AM YOUR REGISTRATION INCLUDES🏅 Finisher Medal👕 Custom 5K T Shirt🎃 Costume Contest🏆 Race Awards REGISTRATION$35 Online$45 Day Of Event ⏱ Chip Timed 5K🏆 Awards for Top 3 Overall Male & Female + Age Group Winners 📍 East La Loma Park | Modesto, CA Run. Walk. Dress up. Give back. ❤️
5K
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OCT 25

Monster Mash

Coronado, CA
The Monster Mash is back! Get ready to shoot potatoes at ghost boats, cruise on a haunted ghost ride, get zombified, and more! Halloween activities for all ages! Must pre-register for the haunted ghost ride and trunk or treat. All other activities are until supplies last. Adult Activities: Tarot Card Reading Halloween Themed Pop Up Bar Children Activities: Trunk or Treat (must pre-register) Bounce Houses Pumpking Painting (until supplies last) Potato Gun Mummy Races Air Brush Tattoos Family Activities: Ghost Rides Zombie Caricatures Dog Costume Contest
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OCT 25

Bakersfield Monster Mash Dash

Bakersfield, CA
Welcome to Bakersfield’s Halloween Run, our Monster Mash Dash 5K Run/Walk and Little Monster Dash!  This Halloween-themed annual race is an event that you won't want to miss and we guarantee you will experience a spooktacular fun time!  Wear a Costume and be in our Costume Contest!  Largest Group Award! Our Charity Partner for the Monster Mash Dash is Kern County Youth and Family Resource Centers.
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OCT 25

Space Race Run

La Canada, CA
Young At Heart Foundation supports kids and their families that are awaiting and recovering from organ transplants. Join us at the Hahamongna Watershed park area, Just north of the Rose Bowl stadium.  For more information visit: youngatheartfoundation.com
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OCT 25

Finish The Ride and Finish The Run Santa Clarita

Valencia, CA
Finish The Ride & Finish The Run – Santa ClaritaSunday, October 25, 2026 • 6:00 AM – 2:00 PMWest Creek Park • 24247 Village Circle Drive, Valencia, CA 91354 Join us for a memorable day of running, riding, walking, and rolling—all for a purpose. Finish The Ride & Finish The Run is more than an event; it’s a movement to make roads safer for cyclists, pedestrians, and drivers everywhere.  🌄 What to Expect Multiple Ride Options (Routes are subject to change)• 12‑Mile Family Fun Ride/Roll – ideal for beginners & families (mostly on bike paths). • 25‑Mile Tour de River Ride – advanced beginner/intermediate route. • 62‑Mile Metric Century – challenging ride with scenic canyons and elevation gain (~3,500 ft). Run/Walk Options• 5K Run/Walk• 10K Run/Walk• 1K Kids & Puppy Run – for little ones and canine companions.  🕒 Schedule (October 25, 2026) Time                                             Event 6:00 AM                                       Check‑in opens7:00
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OCT 25

Alhambra Pumpkin Run 2026

Alhambra, CA
Join us on Sunday, October 25th for our 13th Annual Alhambra Pumpkin Run and Halloween Festival in Downtown Alhambra! Proceeds benefit the Alhambra Educational Foundation! Our mission is to provide a fun, family environment to promote physical fitness, health and give back to our community with a fun event that brings you costumes, music and entertainment. HOW TO RUN WITH US? STEP #1: SIGN UP! - Register online early! We will be selling out and selling a capped number of runners this year. STEP #2: PICK UP! - Pick up your runner’s packet on Saturday, October 24th: 9am - 1pm at Alhambra High School Cafeteria. STEP #3: SHOW UP! - Show up on Sunday, October 25th to run or walk with us in your run gear, Halloween costume, or your Pumpkin Run t-shirt! RUNNERS RECEIVE: Commemorative 2026 Pumpkin Run t-shirt Commemorative 2026 Pumpkin Run custom finisher’s medal received after crossing the finish line Commemorative 2026 Pumpkin Run runner's bib with timing chip Commemorative 2026 sponsore
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OCT 25

Run for Hope

Claremont, CA
Join us for a 5K fundraiser run & walk supporting a spring water project to provide clean water to children in the Sidama region of Ethiopia. Sunday, October 25th at 11:00 AM Strehle Track, Pomona College; 522 N Mills Ave, Claremont, CA 91711 $10 entry — all proceeds go directly toward the clean water project Come run, walk, and support a great cause! Learn more about the organization and the project at https://hawassahope.org/clean-water-projects/
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OCT 25

DISK GOLF (beginner friendly)

San Diego, CA
DISK GOLF  Sunday, October 25, 10AM, FREE Anyone interested in trying beginner-friendly disc golf? No experience needed—we’ll learn the basics, and have some fun. Equipment and transportation provided.
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OCT 25

1 IN 5K Dyslexia Dash

Los Angeles, CA
Check-In begins at 7:30 am Race will begin promptly at 8:30 am All Dyslexia Dash participants will receive a race bib.You have the option to run or walk one loop around the golf course on a dirt packed trail that is flat. Water and snacks will be provided for participants.Public bathrooms are available for use nearby. Parking: There is free parking available. Park at Merry Go Round Lot 3 Address Look for the playground and IDALA tables when you arrive.
5K
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OCT 25

Sharsheret West Coast Dash

Playa Del Rey, CA
On Sunday, October 25, 2026, Sharsheret will gather hundreds of thrivers, caregivers, friends and supporters on the beach for our 5th Annual West Coast Dash in support of our breast and ovarian cancer work. Our run/walk will include a 5K Race, 10K Race, Family Fun Race, Virtual Race and Event Festival. Contributions excluding the value of race entry tickets are tax-deductible. Schedule for Race Day, Sunday, October 25 (schedule subject to change) 6:00am – Parking Lots Open – First 200 cars will receive a free parking pass. Parking is $13. Please have cash available to expedite process. 7:00am – Registration and Festival Opens (Recommended 5K/10K arrival time)    7:20am – Minyan  8:00am – Welcome and Opening ceremony.  8:20am - Warm Up and Walk to Start Line for 5K/10K 8:30am - 10K Start (Recommended Family Fun Race arrival time) - 10K Race Course Map https://www.mapmyrun.com/routes/view/6202657963/  - 5K Race Course Map https://www.mapmyrun.com/routes/view/6202686184  8:40am - 5K Start
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OCT 25

Pleasanton Rotary Halloween Spirit Run

Pleasanton, CA
Join us on Sunday, October 25 for this year's event!    Start and finish in Downtown Pleasanton on Main Street. Wear a costume if you would like!  5K/10K starts at 8:30 a.m.  5K and 10K events are timed; awards will be presented to overall winners as well as to top finishers in each age group. Kids Challenge (1/4 mile for older kids, plus a 100 yard dash) starts at 10:00 am. Kids ages 12 and under are welcome to participate.  DryBlend long sleeved t-sleeve shirts for 5K-10K participants. Participants may opt out of t-shirt if they wish.  To celebrate our 33rd running of this event, finisher medals will be awarded to all 5K, 10K, and Kid's Race participants. Proceeds Proceeds support scholarships for Pleasanton students and community & international projects of The Rotary Club of Pleasanton. Leashed Dogs Well-behaved dogs are permitted in the 5K or 10K; all dogs must start in the back of the pack at the starting line, be on a non-retractable leash, and be cleaned up after by
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OCT 26

Metal into magic! Ring-making Class

San Diego, CA
Date: Saturday, October 17 | Class duration: 11 am - 1 pm | Open to: Active-Duty E1-E6 Join us for a fun and interacting class in which you are able to create your own sterling silver ring. Enjoy a fun 2-2.5-hour hands-on experience with expert guidance! More information coming soon!  Workshop info:  No experience neededIncludes 925 Sterling SilverAll materials included  *NOTE: In this workshop you will get your hands dirty and will do 80% of the actual ring making process.
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OCT 29

Witches Paddle

Coronado, CA
Kick off the spooky festivities with a witches paddle into the San Diego Bay. Slip on your witch hat and paddle into the dusk! Includes your choice of a paddleboard or kayak with glow lights and a witch hat. Must be 10 and up and able to swim.
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OCT 30

The Iron Office Health And Fitness Expo

Clovis, CA
Welcome to The Iron Office Health and Fitness Expo at The Two Cities Marathon! This year's Expo will be held on Friday, October 30th, from 2:00PM to 6:00pm AND Saturday, October 31st, from 9AM-2PM at The Well Community Church(325 Nees Ave, Clovis, CA 93611) The 2026 Iron Office Health and Fitness Expo will host thousands of health and fitness enthusiasts. Exhibitor booths are an inexpensive marketing method of getting your product and services to an active and fitness minded community.  All booths are 10' x 10' and complete with pipe and drape, which includes one 8' table with table cloth and 2 chairs.  Multiple booths are discounted and are available on a first come basis. We will try to accommodate you with the booth space you choose. OUTSIDE BOOTHS DO NOT INCLUDE TABLES, CHAIRS, OR CANOPIES. VENDORS MUST PROVIDE THEIR OWN. The Two Cities Marathon reserves the right to refuse a vendor a booth for any reason including for selling or promoting alcohol, tobacco or other
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OCT 30

2026 Lake Casitas Short Course Championships (Middle School Racer Sign Ups ONLY)

Ventura, CA
Lake Casitas Short Course Championships is a high school level meet, home of the Ventura County Championship on the beautiful Lake Casitas Cross Country Course where many legends of the sport have run over the last 30 years. The middle school level race will return in 2026. This will be one middle school race with all genders and grades. If registrations are over 200 runners, we may increase to two races.  Important race information:  Course Map Link HEREMiddle School Race Time:  4:15pm High School races will follow at 4:45pm and 5:15pm. Stick around to watch the "big kids" race! Awards: Top 30 boys and Top 30 girls will receive medals in the finish chute. Cost: $5 goes towards timing with live chip timing and awards. Paid here, on RunSignUp. Parents can register their athletes. Directions: 11311 Santa Ana Rd, Ventura, CA 93001. From the main Lake Casitas gate, turn right and drive about 2 miles to the cross country course and boat launch rampParking: NO BUSSES OR CARS WILL BE
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OCT 30

USS Hornet Halloween 5k

Alameda, CA
Event Details: October 30th.  Friday pre-halloween Evening Run  We have partnered with the USS Hornet to bring back a super fun and unique race experience to Alameda. Our "day of the dead" Twilight Run we did a few years ago is back, just moving the date slightly to coincide with Halloween. The event will still benefit the USS Hornet Museum and will start at 6:30pm. Sunset is scheduled that evening for 6:12pm, so headlamps are recommended but we will have lights on the course.  Costume highly recommended and encouraged!  The run will take you for a scenic loop around Alameda Point, starting and finishing at the Pier. Runners will enjoy views of San Francisco, spirit alley and the estuary shoreline along the flat and fast 5k course. There will be our normal beer garden, food, music and Age Group awards THERE IS NO KIDS RUN FOR 2026 - DUE TO TRAFFIC CONCERNS ON FRIDAY NIGHT. There is plenty of parking at the Hornet and around Alameda Point.  Event - Schedule  Packet pick-up ~ Lau
5K
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OCT 30

DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)

Bakersfield, CA
Join Us for a Vibrant Celebration of Life and Remembrance! Dia de los Muertos, or Day of the Dead, is a cherished Mexican holiday that honors and celebrates the lives of those who have passed away. Families gather to create colorful altars, share stories, and remember their loved ones with joy and gratitude. This unique race at Yokuts Park in Bakersfield invites you to participate in a heartfelt celebration filled with culture, community, and connection. WE HAVE ADDED A 2 MILE SPEED WALK! TOP 5 MALE/FEMALE GET AWARDS!  DIA DE LOS MUERTOS HALF MARATHON!! A FEW REASONS TO JOIN OUR EVENT: UNIQUE MEDALHOODIES FOR ALL PARTICIPANTS  (If registered by Sunday, October 5th). SHIRTS FOR THOSE WHO SIGN UP AFTER! COFFEE MUG (If registered by Sunday, October 5th) AGE GROUP AWARDS FOR BOTH 5K & HALF MARATHON!$100 CASH TO FIRST MALE/FEMALE IN HALF MARATHON!30 OZ COFFEE TUMBLER FOR TOP 10 OVERALL IN THE HALF MARATHON!TACOSHOT CHOCOLATEEVENT GOODIE BAGDIA DE LOS MUERTOS PAN DULCEDIA DE LOS MUERTOS
5KHalf Marathon
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OCT 30

Dia De Los Deadlift Challenge

San Diego, CA
REGISTRATION FEE: $18.00 - Come join the NASNI MWR Team this Halloween for the "Dia De Los Deadlift" Challenge" from 0700-1700- Lifting your own Bodyweight, complete as many Continuous Unbroken Barbell Deadlift reps.  - Check in / Weigh in at NAS North Island - VADM Fitness Center Bldg. # 1507 RULES:- Weigh in prior to lift- Lift until failure (Minimum 5 repetitions, Maximum ??)- No Sumo lifts- No Lifting straps- No Chalk- Athletic footwear required- Weight Belts allowed  ***MWR Fitness events are open ONLY to valid Military ID card holders (Active Duty, Retiree, Dependent, DOD) and their guests!***
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OCT 31

Halloween Trick or Trot Run 5K/10K/13.1 SACRAMENTO

Sacramento, CA
🎃 👻 Trick or Trot! 👻 🎃Run in our annual Halloween Run, where healthy fitness meets frightful fun! We'll even give you some free Halloween candy after your run! Find a friend, set a goal, and join this unique 5K, 10K, or 13.1 Half-Marathon run! Forget the massive, impersonal race-day crowds. We keep things small, personal, and local, so every run feels less like a number and more like a memory. Whether it's a 5K, 10K, half-marathon, or virtual run, you'll get the warmth of a hometown event.   Overview:Spots sell out FAST! We close each wave the moment it fills. Once a wave sells out, you can grab the virtual run option or join the waitlist. This is a smaller, private group run with a capped field per wave so it never feels crowded and you're never just a bib number. All paces and ages welcome (under 18 with a guardian) - run it, walk it, however you like! There's no gear, no setup, no fuss - just you, the course, and our coordinators c
5K10K
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OCT 31

PB&J Fuel Run 5K/10K/13.1 SAN FRANCISCO

San Francisco, CA
Smooth vibes. Sweet energy. Bold moves. 🥜🍓 PB&J Fuel Run is all about a combo that just works. Mix your pace, spread the fun, and stick with it all the way to the finish. No stress, no expectations, just miles that feel good and a finish that feels even better. Run it your way, enjoy every step, and fuel your finish with good energy and great company. Let’s make this run unforgettable. 🏃‍♀️🏃‍♂️✨   Overview:Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list. This is a smaller, private group run with a cap per wave. All paces and ages (under 18 with guardian) are welcome - Run or Walk!   There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting! When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run club
5K10K
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OCT 31

Filthy 50+ - MTB Ride with Benefits

Escondido, CA
The 12th Annual Filthy 50+ will take you through various areas of San Dieguito River Park and Black Mountain Park. Fast and flowy for all skill levels. The 30 mile riders will head out and turn around at the 15 mile mark and the 50+ mile riders will continue on to the Black Mountain Park area where you will encounter a lollipop and new trails to go with it! The course will be fully marked with Pink Flags and Red Arrows. Fully stocked feed stations will be placed throughout the ride to keep you fueled up. There will be a kid’s ride supported by Team Quick n’ Dirty at 8:45am. Awards will be given out immediately following the kids ride. Registration for the kid’s ride will be online and onsite.  When riding the course please be aware that the trails will be open to the public so please pay attention to other riders, hikers, and horseback riders. Please pay special attention when riding the switchbacks portion of the course and use courtesy when passing. Thanks! WHEN: Saturday, Oc
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OCT 31

Halloween Trick or Trot Run 5K/10K/13.1 SAN DIEGO

San Diego, CA
🎃 👻 Trick or Trot! 👻 🎃Run in our annual Halloween Run, where healthy fitness meets frightful fun! We'll even give you some free Halloween candy after your run! Find a friend, set a goal, and join this unique 5K, 10K, or 13.1 Half-Marathon run! Forget the massive, impersonal race-day crowds. We keep things small, personal, and local, so every run feels less like a number and more like a memory. Whether it's a 5K, 10K, half-marathon, or virtual run, you'll get the warmth of a hometown event.   Overview:Spots sell out FAST! We close each wave the moment it fills. Once a wave sells out, you can grab the virtual run option or join the waitlist. This is a smaller, private group run with a capped field per wave so it never feels crowded and you're never just a bib number. All paces and ages welcome (under 18 with a guardian) - run it, walk it, however you like! There's no gear, no setup, no fuss - just you, the course, and our coordinators c
5K10K
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OCT 31

Motherlode Monster Dash 5k

Jackson, CA
Lace up your sneakers… if you dare! The Mother Lode is about to get a frightfully fast new tradition! Mark your calendars for Saturday, October 31st at 8:00 AM and join us for the second annual Mother Lode Monster Dash 5K & Costume Contest, starting and finishing at the historic Jackson Catholic Cemetery—the perfect place to rise and run! This 5K run/walk welcomes all creatures—whether you’re lightning-fast like a vampire bat, steady as a shambling zombie, or somewhere in between. Along the way, you’ll soak in the golden autumn beauty of the Mother Lode before crossing the finish line for our ghoulishly great post-race party at 9:00 AM. Park at the Jackson Catholic Cemetery on Cemetery Ln. in Downtown Jackson, and start and finish the race alongside the spirits of the dead. 🎃 Awards & Costume Contest – Prizes for overall speed demons, age-group champions, and the most spook-tacular costumes. First-place finishers will receive a homemade pumpkin pie made by Argonaut culi
5K
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OCT 31

Boo Run 5k & 10k

Porterville, CA
Imagine Halloween Morning… Families, runners, and walkers dressed in creative costumes, colorful decorations, music, laughter, and hundreds of people enjoying one of Porterville’s most beautiful outdoor spaces. Join us on Saturday, October 31, 2026, for the Tule River Parkway Boo Run 5K & 10K! Whether you are a seasoned runner chasing a personal best, a casual walker, or a family looking for a fun Halloween activity, there is something for everyone. Both races start and finish at Fallen Heroes Park in Porterville. The courses travel along the Tule River Parkway, a paved pedestrian and bicycle trail that follows the Tule River. The 5K features a shorter out-and-back course, while the 10K continues farther along the Parkway before returning to the park. Costumes Encouraged Come dressed as something spooky, silly, heroic, or completely original. Costumes are encouraged but not required. Please make sure your costume is safe for running or walking, does not block your vision, and does
5K10K
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OCT 31

Run For The Brains!

Stockton, CA
Come One, Come All to the Halloween Spooktacular! Formerly known as the Brain Health to Beat Stroke, this event is a fang-tastic 5K, 10K, and 1K that raises funds and awareness for strokes. Don't let your loved ones become zombies—join us for a monstrously good time! Why Participate? Healings in Motion provides local educational programs and services supporting brain health, stroke awareness, and prevention. Your participation and donations will increase stroke awareness in our community, help reduce the number of strokes, and directly support those with stroke recovery. It's a grave cause we're passionate about! For more information, visit https://www.healingsinmotion.org The Courses 5K - A Closed Course (No Ghouls Allowed!) All runners will start on Ben Holt Drive in the heart of the Lincoln Center. We'll head West toward Lincoln High School, then make our way back to the finish line where you'll be greeted by a ghoulishly good time! Expect themed music, trick-or-
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OCT 31

This Hill Has Eyes 5K

Palmdale, CA
We are also thrilled to announce an exciting new event on the calendar: a brand-new race on Halloween morning at Pelona Vista! For those who have been waiting for the ultimate local challenge, the course will finally take runners all the way up the infamous big hill. Break out your best running costumes, bring your strongest climbing legs, and get ready for a festive, heart-pumping morning of trail running and Halloween fun with the club.
5K
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OCT 31

Whittier Spooktacular 5K

Whittier, CA
Additional race information can be found at https://www.whittier5k.com. LocationWhittier Community Center7630 Washington AveWhittier, CA US 90602 DetailsEarly Packet Pick UpFriday, October 30, 2026 1pm -6 pmWhittier Community Center,7630 Washington Ave, Whittier CA 90602 InformationCustom-designed Finishers’ Medal for all runnersCash prize to top 5K finisher overall male & femaleUSATF Certified courseChip TimingComputerized finish line results provided by Alliance Race TimingT-shirt - sizes are not guaranteedPancake Breakfast after the race (Free for all registered runners, $5.00 for non-registered)Music along the courseRefreshments and Goodie Bags for all participantsCostume contest - Costumes must be family appropriate(Contestants must be a registered 5K run/walk participant) Dates and prices Early Bird June – end of August 31Regular Price – September 1 – October 11Late Registrations – October 12 – Day of the race.Individual Registration Early Bird: $40 Regular: $50 Late:
5K
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OCT 31

Howl-o-ween Doggie Dash 5K

Los Angeles, CA
Join us for our 9th Doggie Dash - the Howl-o-ween Doggie Dash 5K! Run (or walk) with your pup to help LA Frontrunners raise funds for The Rescue Train & Angel City Pit Bulls!  All the details are below.  Pets are such a vital part of so many of our lives, so come race your heart out or take a stroll, and help us support two organizations whose missions are to care for pets in need and to make sure those who are struggling are able to care for and have their pets in their lives. Location & Date The Howl-o-ween Doggie Dash 5K takes place on Saturday, October 31, in Griffith Park. Doggie Dash 5K starts at 8:30.  The start/finish area is the Park Center grassy area in Griffith Park. The 5K is one loop around the golf course and is trail/packed dirt and flat. Course & Race InfoThe start/finish area for Howl-o-ween Doggie Dash 5K is in the Park Center grassy area in Griffith Park (diagonally across from the Griffith Park Visitor Center/Ranger Station). Look for us on the corner b
5K
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OCT 31

Gardner Health Services 2026 Día de los Muertos Run-Walk

San Jose, CA
And......we're back! We're thrilled to announce our 7th Annual Gardner Health Services Día de los Muertos Run-Walk, now featuring a more focused 5K route to make your experience even more vibrant and memorable. Join us on Saturday, October 31, 2026 at 8:30am along the beautiful Guadalupe River Trail in San Jose, CA. This year, we're streamlining our route to just a 5K to create an even more engaging and energetic event that celebrates life, health, those we love eternally, and the incredible spirit of our community. But, our mission is strong and remains to support children and families who need access to medical care, turning every step into hope and healing. Get ready for a morning filled with music, entertainment, and a health resource fair that promises fun for the whole family. Together, we'll run, walk, and make a difference! REGISTRATION INCLUDES Race Entry Bib and Timing ChipFinisher's MedalDía de los Muertos Tech Shirt PACKET/BIB PICK-UP Friday, October 30,
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OCT 31

PSYKO FIT Halloween HYROX WEEKEND

Sacramento, CA
PSYKO FIT HYROX WEEKEND Take a step into the HYROX arena with Psyko Fit Club—the first Hyrox affiliated gym in Sacramento. Join us October 31st for our Halloween themed Full Hyrox Simulation. 🏆 Best Overall Costume — the top costume of the event😂 Funniest Costume — biggest laughs🎨 Most Creative — most original idea or execution👯 Best Duo/Team Costume — perfect for HYROX Doubles🤯 Most Outrageous — the costume that makes everyone say, “What the hell are you wearing?” **Do you HAVE to race in a costume to participate? No, of course not...but you will not get any tricks or treats 😃  Full HYROX Simulation Race the full HYROX simulation using official equipment including CENTR wall balls, sandbags, and sleds. Practice your race strategy and experience the electric energy. Sign up solo or with a doubles partner. The FULL HYROX SIM Workout: *1,000 Meter Run before each station Ski Erg – 1000 MetersSled Push - 50 MetersSled Pull – 50 MetersBurpee
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OCT 31

Monster Mash Dash and Zombie Zoom

Merced, CA
Lace up your running shoes and join us on on October 31st for a frightfully fun day of racing! The little monsters (ages 10 and under) kick things off at 12:00 PM with the 400 m Zombie Zoom, a quick run perfect for our youngest ghouls. Then at 12:15 PM, the Monster Dash takes off with your choice of a timed 5K or 10K. Whether you're chasing a personal record or just out for a haunted good time, there's a distance for every runner. Costumes are encouraged, so come dressed to scare! Run fast! The first 100 finishers will take home a custom race medal, so don't get caught dead at the back of the pack. Note: High schoolers in full monster costumes will be chasing and scaring during the 5K and 10K race. Options to not be chased.
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OCT 31

A YOKAI HALLOWEEN !

San Diego, CA
Saturday, October 31st, 6-10PM $40 You have been summoned to the Yokai Masquerade. A night when the boundary between the mortal world and the spirit realm collapses entirely.  Music, Merch, dessert bar, flash tattoos, tarot reading, games and fire performance await you at this outdoor event held in San Diego’s top Japanese garden.
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OCT 31

Linda Fireman's Association Halloween Fun Run

Plumas Lake, CA
All proceeds benefit the Linda Firemans Association
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OCT 31

LASAA Mug Run - South LA

Los Angeles, CA
2026
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OCT 31

Día De Los Muertos 5k Race

Sacramento, CA
Come celebrate Día De Los Muertos (Day Of The Dead) and run a 5k race.    5k run/walk starts 9am on Saturday October 31st, 2026. All levels are welcome, it is a fully paved path, strollers are welcome. Packet Pick up is Saturday October 31st 7am-8:45am at North Natomas Regional Park (Same location as the race). All participants will receive a t-shirt and sticker with registration, top 3 in each age group and top 3 over all in male and female categories will receive ribbons.   The race will be held at North Natomas Regional Park, it is a flat course held on the sidewalk which is a loop around the entire park. All ages and running/walking abilities are welcome to participate. Participants are welcome to wear costumes. Only dogs allowed are service dogs, this is a USATF rule because this is a sanctioned race by USA Track and field. https://www.usatf.org/home/top-utility-nav-content/event-insurance-sanctions/sanctions-faqs#Can%20dogs%20or%20other%20animals%20participate%20in%20sanctioned%2
5K
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OCT 31

Northgate Market 5K

Anaheim, CA
It’s Back — The Annual Northgate Market 5K!We’re thrilled to welcome you to this beloved community tradition, benefiting the Familia González Reynoso Foundation. This incredible organization supports higher education, human services, schools, orphanages, scholarships, and grants that change lives. Come join the fun at Angel Stadium, where you’ll get the unforgettable chance to run on the field and see yourself on the Jumbo-Tron — all while enjoying a vibrant Día de los Muertos theme. Every race entry includes: Commemorative race shirtFinisher medalFinish line photos & videoAccess to the post-race expo Come run, celebrate, and make a difference — together, we can support those in need while creating memories that last a lifetime! Register before September 30th (at 12:00am) to guarantee your race-shirt size!
5K
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OCT 31

Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO

San Francisco, CA
🎃 👻 Trick or Trot! 👻 🎃Run in our annual Halloween Run, where healthy fitness meets frightful fun! We'll even give you some free Halloween candy after your run! Find a friend, set a goal, and join this unique 5K, 10K, or 13.1 Half-Marathon run! Forget the massive, impersonal race-day crowds. We keep things small, personal, and local, so every run feels less like a number and more like a memory. Whether it's a 5K, 10K, half-marathon, or virtual run, you'll get the warmth of a hometown event.   Overview:Spots sell out FAST! We close each wave the moment it fills. Once a wave sells out, you can grab the virtual run option or join the waitlist. This is a smaller, private group run with a capped field per wave so it never feels crowded and you're never just a bib number. All paces and ages welcome (under 18 with a guardian) - run it, walk it, however you like! There's no gear, no setup, no fuss - just you, the course, and our coordinators c
5K10K
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OCT 31

Halloween Trick or Trot Run 5K/10K/13.1 LOS ANGELES

Los Angeles, CA
🎃 👻 Trick or Trot! 👻 🎃Run in our annual Halloween Run, where healthy fitness meets frightful fun! We'll even give you some free Halloween candy after your run! Find a friend, set a goal, and join this unique 5K, 10K, or 13.1 Half-Marathon run! Forget the massive, impersonal race-day crowds. We keep things small, personal, and local, so every run feels less like a number and more like a memory. Whether it's a 5K, 10K, half-marathon, or virtual run, you'll get the warmth of a hometown event.   Overview:Spots sell out FAST! We close each wave the moment it fills. Once a wave sells out, you can grab the virtual run option or join the waitlist. This is a smaller, private group run with a capped field per wave so it never feels crowded and you're never just a bib number. All paces and ages welcome (under 18 with a guardian) - run it, walk it, however you like! There's no gear, no setup, no fuss - just you, the course, and our coordinators c
5K10K
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OCT 31

The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs

Long Beach, CA
🎃 The Long Beach Halloween Run5K • 10K • Half Marathon • Kids Dash 📍 Start/Finish: Alamitos Beach, 780 E Shoreline Dr., Long Beach, CA📸 Iconic Backdrop: The legendary Queen Mary Get ready for a hauntingly good run along the Long Beach shoreline. The Long Beach Halloween Run brings spooky-season energy to one of the most iconic coastal courses in Southern California. As you race along the waterfront, the Queen Mary looms in the background — rich with history, mystery, and more than a few ghost stories of her own. 👻⚓️ Costumes are encouraged, vibes are high, and the miles are unforgettable. Whether you’re chasing a PR, running for fun, or just here to show off your costume, this is Halloween done the CaliFlow way.  🏁 Race Day Schedule6:00 AM – Runner Check-In & Bib Pickup Opens7:30 AM – Half Marathon Start8:30 AM – 5K & 10K Start (All Ages Welcome)9:15 AM – NEW! Kids Dash (200-yard dash for kids 10 & under) 🎃🧒  🕸
5K10KHalf Marathon
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OCT 31

PB&J Fuel Run 5K/10K/13.1 LOS ANGELES

Los Angeles, CA
Smooth vibes. Sweet energy. Bold moves. 🥜🍓 PB&J Fuel Run is all about a combo that just works. Mix your pace, spread the fun, and stick with it all the way to the finish. No stress, no expectations, just miles that feel good and a finish that feels even better. Run it your way, enjoy every step, and fuel your finish with good energy and great company. Let’s make this run unforgettable. 🏃‍♀️🏃‍♂️✨   Overview:Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list. This is a smaller, private group run with a cap per wave. All paces and ages (under 18 with guardian) are welcome - Run or Walk!   There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting! When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run club
5K10K
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OCT 31

Foothill Presents: Nightmare on Hart Park Lane 5K

Bakersfield, CA
The Foothill Cross Country Team is putting on a 5K race at Hart Park on October 31st. There will be 3 races taking place: a High School Girls Race, a High School Boys Race, and an All Ages Race. Every Person who signed up for the all ages race will receive a medal and a T-Shirt to commemorate the race. The top 10 for both High School races will also receive a medal. There will be food and drink vendors on location as well as a trunk or treat for the kids. Please bring your families out to participate in this fun-filled day!
5K
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OCT 31

Borrego Time Trial Classic

Borrego Springs, CA
Southern California's Premier 6-12-24 Hour Time Trial event in Borrego Springs!Fun, fast and flat courses! Solos and Teams!
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OCT 31

Restless Soles: 4 or 6 mile Night Run + Music Event

Walnut Creek, CA
This isn’t a traditional fun run—and it definitely isn’t a traditional Halloween party. On Saturday night, October 31, Restless Soles brings running and live DJ music together for an entirely different kind of night out at CrossFit Sweat Shop in Walnut Creek. Four runs will start at the top of four consecutive hours. At each start, choose between a 1-mile loop or a 1.5-mile loop, then return to the Sweat Shop to hang out, recover, and enjoy live music before the next round begins. Complete all four rounds for a total of four to six miles—or participate in as many rounds as you’d like. We encourage everyone to experience the full night, but the format is intentionally flexible. Between runs, a live DJ will keep the music going throughout the evening. Run, return, catch your breath, spend time with the crowd, and get ready to lace up again at the top of the next hour. Inspired by the color, energy, and imagery of Día de los Muertos, Restless Soles is designed to feel more like a nighttim
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OCT 31

ZombieRunner Halloween

San Jose, CA
Run in your Halloween costume along the popular Coyote Creek trail and win a prize.  The Half Marathon (CA21023TEB) and Marathon (CA22026TEB) courses are USATF are certified.
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OCT 31

PB&J Fuel Run 5K/10K/13.1 SAN DIEGO

San Diego, CA
Smooth vibes. Sweet energy. Bold moves. 🥜🍓 PB&J Fuel Run is all about a combo that just works. Mix your pace, spread the fun, and stick with it all the way to the finish. No stress, no expectations, just miles that feel good and a finish that feels even better. Run it your way, enjoy every step, and fuel your finish with good energy and great company. Let’s make this run unforgettable. 🏃‍♀️🏃‍♂️✨   Overview:Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list. This is a smaller, private group run with a cap per wave. All paces and ages (under 18 with guardian) are welcome - Run or Walk!   There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting! When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run club
5K10K
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OCT 31

PB&J Fuel Run 5K/10K/13.1 SACRAMENTO

Sacramento, CA
Smooth vibes. Sweet energy. Bold moves. 🥜🍓 PB&J Fuel Run is all about a combo that just works. Mix your pace, spread the fun, and stick with it all the way to the finish. No stress, no expectations, just miles that feel good and a finish that feels even better. Run it your way, enjoy every step, and fuel your finish with good energy and great company. Let’s make this run unforgettable. 🏃‍♀️🏃‍♂️✨   Overview:Run will sell-out QUICK! We will close off waves the moment they fill up. If waves are sold out, you can sign-up for the virtual run option or wait list. This is a smaller, private group run with a cap per wave. All paces and ages (under 18 with guardian) are welcome - Run or Walk!   There's no equipment or setup, this is a pure run with our coordinators to support you in a warm, stress-free setting! When you sign-up, we give you the support you need to help you achieve your goals and fitness. We also invite you to be part of our local run club
5K10K
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OCT 31

TriFind Race Director Summit

Newport Beach, CA
The Future of Multisport Starts Here The TriFind Multisport Race Director Conference brings together the industry’s most influential race directors and brand partners for an afternoon of insight, collaboration, and recognition. With representatives from 1,600+ multisport races invited, this gathering is designed to deliver real data, actionable strategy, and meaningful connections that shape the future of endurance racing. Who’s Invited 900+ NGB races600+ Non-NGB racesLeading brands and sponsors seeking 2027 partnershipsIndustry media and nonprofit leaders Important Registration Information This registration is intended for race directors attending the TriFind Race Director Summit. Sponsors and brand partners are warmly invited to participate, but must register through the 2026 Optimism Cal Tri Newport Dunes race registration at the sponsor rate.  This ensures sponsors receive the appropriate race weekend access, exposure, and activation opportunities, while allowing the su
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NOV 1

Miles For Meals Virtual Triathlon and Virtual Marathon

Sacramento, CA
Miles for Meals A Pneuma Impact Project in partnership with Support the Cuban People OrgGo the distance for a neighbor you'll never meet. A 30-day virtual endurance challenge uniting athletes around one goal: keeping a community fed in Cuba, where food, medicine, and power have all but run out. 11/01/2026 – 12/01/26 · 30 daysChoose: 70.3 Triathlon or MarathonTrack every mile on Strava We connect a global community of athletes around one goal: bringing sustained aid to those the world has forgotten. Because every neighbor deserves to be seen and served — and loving your neighbor isn't optional. Miles for Meals turns the miles you'd train anyway into action where it matters most. Why Cuba, why nowCuba is living through one of its worst crises in decades. The economy has collapsed, and ordinary families are carrying an almost unbearable weight. 20 hrs — Some areas lose power for up to 20 hours a day, crippling hospitals, businesses, and homes.Shortages — Severe nationwide shor
Marathon
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NOV 1

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, CA
2026 Optimism Cal Tri Newport Dunes - 11.1.26. Started in 1978 as the Human Race Triathlon, Cal Tri Newport Dunes is the longest running triathlon in the world operating from the same location. Also started in 1978 was the Ironman World Championship Triathlon Oahu but it moved to Kailua-Kona, Hawaii in 1981. This serves as the Cal Tri Events National Championship Race with registration in the 1500-2000 range. 12 EVENT OPTIONS. 6 Olympic distance events (Triathlon, RunBikeRun, SwimBike, SwimRun, 1640 Yard Swim & 10K Run) and 6 Sprint distance events (Triathlon,  RunBikeRun, SwimBike, SwimRun, 400 yard Swim & 5K Run). Triathlon = swim + bike + run. Typically, the swim and run distances are standard but the bike distance varies from race to race. Check out the course maps for more detailed information. TO DO. Disneyland Park & California Adventure Park. Balboa Island Ferry. Newport Beach.AIRPORT. John Wayne (SNA)AIR TEMPERATURE (AVG). 60 F / 73 FWATER TEMPERATURE (AVG)
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NOV 1

Saratoga Education Foundation 5K Fun Run

Saratoga, CA
SEF 5K Fun Run 2026 Sunday November 1, 2026 - 5K race start at 9am (Kids Dash race start at 10:15am) The Saratoga Education Foundation is excited to announce our fifth annual 5K Fun Run and Walk. Lace up your sneakers on Sunday, November 1, 2026, and join us for a morning of fitness and fun, all while supporting a great cause!  Race your friends and family through neighborhood streets then stay for post-race activities, including food trucks, awards, raffles, games, and a special Kids Dash for children 5 and under.  Parking is available at West Valley College, Parking Lot 3. West Valley College is across the street from Redwood Middle School. Please use cross walks when crossing from West Valley College to the race starting line at Redwood Middle School. There will not be parking available at Redwood Middle School due to the race route. WHAT IS SEF?  It’s all of us! Saratoga Education Foundation (SEF) is district families that work together to provide our children with enrichments that
5K
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