Tri-Cities Marathon

The 43rd Annual Tri-Cities Marathon & Relay will be held Sunday, October 25, 2026!   Remembering Richard "Keith" Fuller. 1957-2025   Join us at the Riverfront Hotel in Richland to run 13.1 or 26.2! Don't feel like going that far? You can also form a relay team of up to four for the marathon.   Improvements for 2026 are already taking shape! We cannot wait to announce them!   Registration: Super Early Bird (November 1 - December 31): $70 Marathon / $55 Half Marathon / $140 Relay Team Early Bird (January 1 - April 30): $80 Marathon / $65 Half Marathon / $160 Relay Team Standard (May 1 - October 9): $90 Marathon / $75 Half Marathon / $180 Relay Team Late (October 10 and after): $100 Marathon / $85 Half Marathon / $200 Relay Team   No paper registrations outside of packet pickup and race morning.   Each entry fee covers: Full course support with aid stations every 2 miles, free event t-shirt, finisher's medal, fully automatic chip timing and more. Relay fee is fixed reg