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CEROX + IRON + IRON X

📍 Frederick, CO
Date
Saturday, September 19, 2026
Distance
Various
Region
Frederick
Est. Participants
Not specified
Get ready for a functional fitness challenge built for all abilities. You’ll take on 8 fitness zones designed to test your endurance, strength, and grit. Choose your level of challenge: Cerox: The event will feature 8 fitness zones plus running.\ Cerox Iron:  The same zones as the classic Cerox event, but without the running. Cerox Iron X: Twice the grind, none of the miles. Double the reps, double the work. You can sign up as an individual or with a partner team. Teams can divide the zone work however they choose. Cerox Workout:400M RunZone 1: 400M Row Erg 400M RunZone 2: 30 Deadlifts - 155/105 400M RunZone 3: 400M Ski Erg 400M RunZone 4: 20 Sandbag Over 4' Bar - 100/70 400M RunZone 5: 75M Walking Lunges - RAM 55/33 400M RunZone 6: 200M Farmers Carry - 2x 60's/ 40's 400M RunZone 7: 30 Cal. Echo Bike 400M RunZone 8: 30 Burpees to Plate Cerox Iron Workout: Zone 1: 400M Row Erg Zone 2: 30 Deadlifts - 155/105 Zone 3: 400M Ski Erg Zone 4: 20 Sandbag Over 4' Bar - 100/70 Zon