April Races in Colorado on Sundays
Denver, CO
RMRR Trophy Series - April
Apr 7, 2024
Three Creeks Half Marathon
Apr 7, 2024
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
May 5, 2024
May 19, 2024
1 more
Unicorn 5K
Apr 21, 2024
Donut Dash 5K
Apr 6, 2025
The Mile High 4.20K
Apr 20, 2025
Colorado Springs, CO
Time Travel Half Marathon
Apr 21, 2024
Grand Junction, CO
Elevate Kids Fun Run
Apr 6, 2025
Golden, CO
Fairmount 5K Pancake Fun Run
Apr 28, 2024
Arvada, CO
Spring Fling Prairie Dog Half
Apr 13, 2025
Brighton, CO
Blue Heron Half and 5K
Apr 21, 2024
Fort Collins, CO
Flying Pig 5K
Apr 28, 2024
Horsetooth Half Marathon
Apr 13, 2025
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
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.
1. 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
2. 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
3. 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
4. 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
5. 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
6. Horsetooth Half Marathon
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Apr 13, 2025Sunday
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13.1M run
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Fort Collins, CO
Larimer County, CO
7. Spring Fling Prairie Dog Half
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Apr 13, 2025Sunday
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13.1M, 10K, 5K run | kids run
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Arvada, CO
Jefferson County, CO
8. Boulder Track Series Meet 1
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Past DateApr 14, 2024Sunday
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track meet
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Longmont, CO
Boulder County, CO
9. Desert RATS Trail Running Festival
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Past DateApr 14, 2024Sunday
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13.1M, 10K trail run
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Fruita, CO
Mesa County, CO
10. Healthy Kids Running Series - Denver
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Past DateApr 14, 2024Sunday
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kids run
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Denver, CO
Denver County, CO
11. Healthy Kids Running Series - Aurora
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Past DateApr 14, 2024Sunday
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kids run
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Aurora, CO
Arapahoe County, CO
12. Healthy Kids Running Series
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Past DateApr 14, 2024Sunday
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kids run
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Trinidad, CO
Las Animas County, CO
13. Platte River Half Marathon
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Past DateApr 14, 2024Sunday
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13.1M run | 13.1M relay
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Littleton, CO
Arapahoe County, CO
14. The Mile High 4.20K
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TentativeApr 20, 2025Sunday
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4.2K run
Virtual OptionMore Information
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Denver, CO
Denver County, CO
15. Blue Heron Half and 5K
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Past DateApr 21, 2024Sunday
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13.1M, 5K run
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Brighton, CO
Adams County, CO
16. Healthy Kids Running Series
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Past DateApr 21, 2024Sunday
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kids run
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Trinidad, CO
Las Animas County, CO
17. Healthy Kids Running Series - Aurora
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Past DateApr 21, 2024Sunday
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kids run
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Aurora, CO
Arapahoe County, CO
18. Healthy Kids Running Series - Denver
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Past DateApr 21, 2024Sunday
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kids run
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Denver, CO
Denver County, CO
19. Rockin' on the River 5K
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Past DateApr 21, 2024Sunday
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5K run
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Littleton, CO
Arapahoe County, CO
20. Time Travel Half Marathon - Colorado Springs
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Past DateApr 21, 2024Sunday
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13.1M, 10K, 5K, 1M run
More Information
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Colorado Springs, CO
El Paso 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.