April Classic Races in Colorado
City Location
1. Aspen parkrun
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Apr 5, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
2. Nielson Two Mile Challenge
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Apr 5, 2025Saturday
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2M trail run
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Colorado Springs, CO
El Paso County, CO
3. Run the Ranch
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Past DateApr 5, 2024Friday
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10K, 5K trail run
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Loveland, CO
Larimer County, CO
4. South Boulder Creek parkrun
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Apr 5, 2025Saturday
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5K run
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Boulder, CO
Boulder County, CO
5. Aurora Polar Plunge and 5K
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Past DateApr 6, 2024Saturday
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5K run
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Aurora, CO
Arapahoe County, CO
6. Baylon Michael Meyer 5K/10K Memorial Run
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Past DateApr 6, 2024Saturday
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10K, 5K run
Virtual OptionMore Information
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Pueblo West, CO
Pueblo County, CO
7. Donut Dash 5K
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Apr 6, 2025Sunday
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5K run
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Denver, CO
Denver County, CO
8. Elevate Kids Fun Run
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Apr 6, 2025Sunday
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10K, 5K, 2.5K run
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Grand Junction, CO
Mesa County, CO
9. Mav Days 5K Run/Walk
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Past DateApr 6, 2024Saturday
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5K run | kids run
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Grand Junction, CO
Mesa County, CO
10. Raptor Run
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Past DateApr 6, 2024Saturday
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5K run
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Brighton, CO
Adams County, CO
11. Run the Ranch
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Past DateApr 6, 2024Saturday
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12H, 6H, 4H trail run | 12H relay
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Loveland, CO
Larimer County, CO
12. Healthy Kids Running Series
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Past DateApr 7, 2024Sunday
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kids run
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Trinidad, CO
Las Animas County, CO
13. RMRR Trophy Series - April
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Past DateApr 7, 2024Sunday
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4M run
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Denver, CO
Denver County, CO
14. Three Creeks Half Marathon
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Past DateApr 7, 2024Sunday
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13.1M run
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Denver, CO
Denver County, CO
15. Desert RATS Trail Running Festival
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Apr 11, 2025Friday
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100K trail run
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Fruita, CO
Mesa County, CO
16. Aspen parkrun
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Apr 12, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
17. Desert RATS Trail Running Festival
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Apr 12, 2025Saturday
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50K, 26.2M trail run
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Fruita, CO
Mesa County, CO
18. South Boulder Creek parkrun
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Apr 12, 2025Saturday
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5K run
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Boulder, CO
Boulder County, CO
19. Boulder Rez Half
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Past DateApr 13, 2024Saturday
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13.1M, 10K, 5K run
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Boulder, CO
Boulder County, CO
20. Desert RATS Trail Running Festival
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Apr 13, 2025Sunday
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13.1M, 10K trail run
More Information
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Fruita, CO
Mesa 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.