Running events in Colorado
Information and schedules of running events in Colorado
64
Races
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Coming soon
Upcoming races in Colorado
Trail
Fri, Jul 18 ➜ Sun, Sep 14, 2025Date confirmed
Ouray 100 Mile Endurance Run
Ouray(CO)83.8 km164 km
🏅 UTMB® World Series
Trail
Tue, September 16, 2025Date confirmed
Leadville Trail 100 Run
Leadville(CO)162.1 km
🏅 UTMB® World Series
Triathlon
Sat, September 27, 2025Date confirmed
Black Canyon Triathlon
Montrose(CO)S
Road Running
End of September 2025
Boulderthon
Boulder(CO)5 km10 km21.0975 km42.195 km
Should it rain or snow
Calendar of Running Races in Colorado
See the complete Colorado race calendar
July 20251 race
September 20254 races
October 20252 races
April 20261 race
May 20267 races
- Nielson Challenge July
- Greenland Trail Races
- 12 HOURS OF MESA VERDE
- Quad Rock
- Denver Marathon
- North Fork 50K Trail Race
- Steamboat Marathon
June 20267 races
- Turquoise Lake Road & Trail Run
- Vail Ultra Benefiting For The Fallen
- Barr Lake Trail Race
- Ironman 70.3 Boulder
- Frisco Mountain Goat Kids Trail Running Series
- Denver Pride
- Slacker Race
July 202629 races
- The Rundola
- Vail HillClimb Trail Run
- Hahn’s Peak Hill Climb
- Frisco Triathlon
- Chase the Moon
- Silverheels 100
- Hardrock 100
- Silverheels Endurance Run
- Leadville Silver Rush Trail Run
- Silver Rush 50 Run
- Crag Crest Trail Run
- Evergreen Mountain Trail Race
- Frisco Mountain Goat Kids Trail Running Series #3
- Tom’s Baby Turnaround Summit Trail Running Series Race #4
- High Lonesome 100 Mile
- 10K and 5K at 10,000 Feet
- Audi Power of Four Trail Run
- Aspen Valley Marathon
- Powderhorn Mountain Ultra, Vertical Challenge and relay
- Spring Creek Memorial
- Silverton Alpine
- Victor Gold Rush Days Pack Burro Race
- Barr Trail Mountain Race
- Elevate Mountain Running Camp
- Kendall Mountain Run
- Blue Moon Trail
- Never Summer Dirty Double
- Never Summer 100k & 60k
- Middle Creek Flyathlon
August 202613 races
- Berry Picker Trail Run
- Volcanic 50
- Sheep Mountain
- SHEEP MOUNTAIN TRAIL RUNS
- Two Brothers Up-and-Down
- Boom Days Pack Burro Race
- Emerald Mountain Epic
- TransRockies Run
- Silverton Ultra Dirty
- Pikes Peak Marathon & Ascent Training Camp
- High Five 100
- Snowmass Tree-O
- San Juan Softie
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