Mountain Biking Events Mountain Bike Event
October
202511octAll DayUC Irvine Anti-Cancer ChallengeRegister Now
Event Details
UCI Anti-Cancer Challenge Ride to defeat cancer! Every participant-raised dollar directly funds pilot studies and early phase clinical trials that aim to develop
Event Details
UCI Anti-Cancer Challenge
Ride to defeat cancer! Every participant-raised dollar directly funds pilot studies and early phase clinical trials that aim to develop new insights into cancer prevention, treatment and cures — to save lives. This event features road bike routes, a mountain bike route, a 5K run/walk and a family-friendly festival for the community to enjoy.
Time
October 11, 2025 All Day(GMT-07:00)
Location
UC Irvine Campus
Irvine, CA
Event Web Site
Event Web SiteEvent Type
Annual ride, run and walk event dedicated to raising funds and awareness for critical cancer research.
Distances
14-mile, 35-mile, 60-mile and 100-mile road bike routes AND a mountain bike route
202518oct6:00 am6:00 pmBell Mountain Challenge / 6 Hours of Apple ValleyRegister Now
Event Details
Bell Mountain Challenge / 6 Hours of Apple Valley The Bell Mountain Challenge is a 6 hour endurance event. Solo or team event. This is 11.5 mile
Event Details
Bell Mountain Challenge / 6 Hours of Apple Valley
The Bell Mountain Challenge is a 6 hour endurance event. Solo or team event. This is 11.5 mile course with some fire roads and single track as well as some asphalt for a short distance. We have free over night parking as well as a break out rider after 4pm to see the course the night before. event.
Time
October 18, 2025 6:00 am - 6:00 pm(GMT-07:00)
Location
Apple Valley, CA
Event Web Site
Event Web SiteRace Flyer
Race FlyerEvent Type
Gravel, Mountain Bike
Distances
The Bell Mountain Challenge is a 6 hour endurance event. Solo or team event.
November
202515nov(nov 15)6:00 am16(nov 16)6:00 pm34th Annual Southridge ChallengeRegister Now
Event Details
The 34th Annual Southridge Challenge mountain bike event features XC, Enduro, Downhill in Fontana, CA.
Event Details
The 34th Annual Southridge Challenge mountain bike event features XC, Enduro, Downhill in Fontana, CA.
Time
November 15, 2025 6:00 am - November 16, 2025 6:00 pm(GMT-07:00)
Location
Fontana, CA
Event Web Site
Event Web SiteEvent Type
Downhill, XC, Enduro
Distances
December
202510dec(dec 10)12:00 am14(dec 14)11:59 pmCyclocross National Championships
Time
December 11, 2025 12:00 am - December 14, 2025 11:59 pm(GMT-07:00)
Location
Fayetteville, Ark.