Welcome to the 3CX 2026 Mountain Bike Race Series — the Bay Area’s biggest and longest-running MTB race series, now entering its 29th year of full-gas racing at Fort Ord, California.

3CX is known for its fast, flowy courses, smooth rhythm, and friendly racing atmosphere. Each round delivers a perfect blend of speed, endurance, and fun — open to all ages and skill levels, from first-timers to elite XC racers.

ALL WEATHER RACING!

January 4 · January 18 · February 1 · February 15 · March 29

All races take place at Fort Ord, CA, featuring the same fast, rolling terrain riders have loved since 1997.