Colorado Race Calendar — Ultra/Trail Events
(As of Tuesday, January 21, 2025) Print Version
For event listing corrections, please contact us.
For event listing corrections, please contact us.| Date | Event | Location |
| Sat., 5/3/25 8:30 AM | Greenland Trail Races 4 Mile Ultra/Trail, 25K Ultra/Trail, 50K Ultra/Trail, 8 Mile Ultra/Trail  Register | Greenland Open Space Larkspur, CO |
| Sun., 6/1/25 7:00 AM | Crazy Legs 10k+ Trail Run 10K Ultra/Trail | Devil's Backbone Open Space Loveland, CO |
Want to know your pace? Check out our Pace Calculator.
Visit our partners: Raceplace Events, Runner's Den, Southern Arizona Roadrunners
