April 10Ks within 100 miles of Boulder, CO
1. 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
29 miles point to pointLarimer County, CO
2. 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
3. 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
18 miles point to pointJefferson County, CO
4. 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
17 miles point to pointAdams County, COJefferson County, CO
5. Rattler Trail Race
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Apr 19, 2025Saturday
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50K, 25K, 10K trail run
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Colorado Springs, CO
85 miles point to pointEl Paso County, CO
6. Earth Day 5K/10K
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Past DateApr 20, 2024Saturday
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10K, 5K run | kids run
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Loveland, CO
29 miles point to pointLarimer County, CO
7. 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
42 miles point to pointWeld County, CO
8. 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
17 miles point to pointAdams County, COJefferson County, CO
9. 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
85 miles point to pointEl Paso County, CO
10. Cheyenne Mountain Trail Race
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Apr 27, 2024Saturday
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50K, 25K, 10K trail run
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Colorado Springs, CO
85 miles point to pointEl Paso County, CO
11. 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
29 miles point to pointLarimer County, CO
12. 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
49 miles point to pointDouglas 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.