April Half Marathon 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. Three Creeks Half Marathon
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Past DateApr 7, 2024Sunday
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13.1M run
More Information
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Denver, CO
Denver County, CO
2. Boulder Rez Half
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Past DateApr 13, 2024Saturday
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13.1M, 10K, 5K run
More Information
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Boulder, CO
Boulder County, CO
3. 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
4. Spring Fling Prairie Dog Half
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Apr 13, 2025Sunday
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13.1M, 10K, 5K run | kids run
More Information
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Arvada, CO
Jefferson County, CO
5. 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
6. 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
7. All-Out Beat the Heat
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Apr 19, 2025Saturday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Boston Marathon Qualifier
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Westminster, CO
Adams County, COJefferson County, CO
8. Great Western Trail Race
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Past DateApr 20, 2024Saturday
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13.1M, 10K, 5K run | kids run
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Severance, CO
Weld County, CO
9. Time Travel Half Marathon
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Past DateApr 20, 2024Saturday
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13.1M, 10K, 5K run
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Westminster, CO
Adams County, COJefferson County, CO
10. 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
11. Time Travel Half Marathon - Colorado Springs
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Past DateApr 21, 2024Sunday
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13.1M, 10K, 5K, 1M run
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Colorado Springs, CO
El Paso County, CO
12. NOCO Half Marathon & 10K
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Apr 27, 2024Saturday
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13.1M, 10K run
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Loveland, CO
Larimer County, CO
13. Rock Hawk Trail Races
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Apr 27, 2024Saturday
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13.1M, 10K, 5K trail run
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Castle Rock, CO
Douglas County, CO
14. Runs With Scissors Races
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Apr 27, 2024Saturday
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50K, 26.2M, 13.1M run
More Information
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Brighton, 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.