September 10Ks within 50 miles of Lafayette, CO
Featured Listing
1. Boulderthon: Downtown Boulder Marathon
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Sep 28, 2025Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
More Information
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Boulder, CO
Boulder County, CO
1. Labor Day Half Marathon
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Sep 1, 2025Monday
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13.1M, 10K, 5K run
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Parker, CO
37 miles point to pointDouglas County, CO
2. Denver Rocks Run 5K/10K
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Past DateSep 8, 2024Sunday
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10K, 5K run
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Denver, CO
18 miles point to pointDenver County, CO
3. All-Out Fall Fest
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Sep 13, 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
11 miles point to pointAdams County, COJefferson County, CO
4. Spooky Sprint
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Sep 14, 2025Sunday
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13.1M, 10K, 5K, 1M run | kids run
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Denver, CO
18 miles point to pointDenver County, CO
5. Move Forward 5K & 10K
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Past DateSep 21, 2024Saturday
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10K, 5K run
Virtual OptionMore Information
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Denver, CO
18 miles point to pointDenver County, CO
6. Superhero Event
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Past DateSep 21, 2024Saturday
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10K, 5K, 1M run | kids run
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Greeley, CO
36 miles point to pointWeld County, CO
7. Golden Gallop
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Past DateSep 22, 2024Sunday
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10K, 5K run | kids run
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Golden, CO
18 miles point to pointJefferson County, CO
8. Prairie Dog Half and 10K/5K
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Sep 27, 2025Saturday
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13.1M, 10K, 5K run | kids run
More Information
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Westminster, CO
11 miles point to pointAdams County, COJefferson County, CO
9. Boulderthon: Downtown Boulder Marathon
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Sep 28, 2025Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
More Information
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Boulder, CO
10 miles point to pointBoulder 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.