Upcoming Races in Colorado
Event Category
Click Here to find out what Classic, Multisport, and Variety mean.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
City Location
1. Boulder Stroke & Stride Series
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Jul 29, 2021Thursday
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aquathon | 5K run
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Boulder, CO
Boulder County, CO
2. Denver Twilight Series: The Sequel
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Jul 30, 2021Friday
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track meet
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Englewood, CO
Arapahoe County, CO
3. High Lonesome 100
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Jul 30, 2021Friday
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100M trail run
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Nathrop, CO
Chaffee County, CO
4. Never Summer 100K
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Jul 30, 2021Friday
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60K trail run
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Gould, CO
Jackson County, CO
5. Rocky Mountain Half Marathon
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Jul 30, 2021Friday
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5K run
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Estes Park, CO
Larimer County, CO
6. Sundown XC
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Jul 30, 2021Friday
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5K trail run
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Aurora, CO
Arapahoe County, CO
7. Aspen parkrun
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Jul 31, 2021Saturday
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5K run
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Aspen, CO
Pitkin County, CO
8. Atalanta 5K
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Jul 31, 2021Saturday
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5K run
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Pueblo, CO
Pueblo County, CO
9. Berry Picker Trail Run
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Jul 31, 2021Saturday
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5K trail run
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Vail, CO
Eagle County, CO
10. Grand Mesa Ultras
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Jul 31, 2021Saturday
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100M, 50M, 50K, 30K trail run
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Grand Junction, CO
Mesa County, CO
11. Kennebec Mountain Run
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Jul 31, 2021Saturday
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15M run
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Durango, CO
La Plata County, CO
12. Mile High Mile
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Jul 31, 2021Saturday
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1M run
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Niwot, CO
Boulder County, CO
13. Never Summer 100K
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Jul 31, 2021Saturday
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100K trail run
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Gould, CO
Jackson County, CO
14. Pikes Peak Ultra
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Jul 31, 2021Saturday
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50M, 50K, 30K trail run
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Colorado Springs, CO
El Paso County, CO
15. Power of Four Trail Run
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Jul 31, 2021Saturday
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50K, 25K trail run
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Aspen, CO
Pitkin County, CO
16. Rocky Mountain Half Marathon
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Jul 31, 2021Saturday
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13.1M run
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Estes Park, CO
Larimer County, CO
17. South Boulder Creek parkrun
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Jul 31, 2021Saturday
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5K run
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Boulder, CO
Boulder County, CO
18. The Colorado Mud Run
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Jul 31, 2021Saturday
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5K mud run
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Colorado Springs, CO
El Paso County, CO
19. Winter Park Half Marathon
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Jul 31, 2021Saturday
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13.1M, 5K trail run
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Winter Park, CO
Grand County, CO
20. Pirates Run for Booty
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Aug 1, 2021Sunday
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5K run
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Thornton, CO
Adams County, CO
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.