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. Aspen parkrun
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Oct 23, 2021Saturday
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5K run
More Information
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Aspen, CO
Pitkin County, CO
2. Bobcat Trail Races
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Oct 23, 2021Saturday
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50K, 25K, 10K trail run
More Information
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Colorado Springs, CO
El Paso County, CO
3. Fox Run Endurance Run
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Oct 23, 2021Saturday
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12H trail run
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Colorado Springs, CO
El Paso County, CO
4. Healthy Kids Running Series - Littleton
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Oct 23, 2021Saturday
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kids run
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Littleton, CO
Arapahoe County, CO
5. Hoofin' It Through the Hollows 5K
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Oct 23, 2021Saturday
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5K run
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Centennial, CO
Arapahoe County, CO
6. Moonlight Mile Fun Run
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Oct 23, 2021Saturday
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1M run
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Henderson, CO
Adams County, CO
7. Runway 5K Run for the Angels
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Oct 23, 2021Saturday
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5K run
Virtual OptionMore Information
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Broomfield, CO
Broomfield County, CO
8. South Boulder Creek parkrun
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Oct 23, 2021Saturday
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5K run
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Boulder, CO
Boulder County, CO
9. Trick or Trot 5K & Kid's Halloween Hunt
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Oct 23, 2021Saturday
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5K run | kids run
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Arvada, CO
Jefferson County, CO
10. Colorado Marathon
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Oct 24, 2021Sunday
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26.2M, 13.1M, 10K, 5K run | 26.2M relay
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Boston Marathon Qualifier
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Fort Collins, CO
Larimer County, CO
11. Day of the Dead 5K
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Oct 24, 2021Sunday
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5K run
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Denver, CO
Denver County, CO
12. Healthy Kids Running Series - Denver
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Oct 24, 2021Sunday
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kids run
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Denver, CO
Denver County, CO
13. Narrowleaf Lake Run
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Oct 24, 2021Sunday
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10M, 7M, 4M run
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Loveland, CO
Larimer County, CO
14. Strides for Sierra 5K
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Oct 24, 2021Sunday
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5K, 1K run
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Arvada, CO
Jefferson County, CO
15. The Stride
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Oct 24, 2021Sunday
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10K, 5K run | kids run
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Littleton, CO
Arapahoe County, CO
16. Westy Half
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Oct 24, 2021Sunday
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13.1M, 5K run
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Westminster, CO
Adams County, COJefferson County, CO
17. Mask Mayhem Fun Run
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Oct 30, 2021Saturday
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5K run
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Colorado Springs, CO
El Paso County, CO
18. Aspen parkrun
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Oct 30, 2021Saturday
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5K run
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Aspen, CO
Pitkin County, CO
19. Dia De Los Muertos 5K Color Run
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Oct 30, 2021Saturday
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5K novelty run
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San Luis, CO
Costilla County, CO
20. Eerie Erie
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Oct 30, 2021Saturday
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10K, 5K run | kids run
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Erie, CO
Weld 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.