September 10Ks within 50 miles of Highlands Ranch, CO
1. Calarat Challenge Trail Running Festival
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Past DateSep 1, 2024Sunday
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13.1M, 10K trail run
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Jamestown, CO
45 miles point to pointBoulder County, CO
2. 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
11 miles point to pointDouglas County, CO
3. 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
13 miles point to pointDenver County, CO
4. 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
20 miles point to pointAdams County, COJefferson County, CO
5. Ned Ned Run
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Past DateSep 14, 2024Saturday
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13.1M, 10K, 5K trail run
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Nederland, CO
40 miles point to pointBoulder County, CO
6. 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
13 miles point to pointDenver 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
19 miles point to pointJefferson County, CO
8. HRCA Wildcat Mountain Trail Races
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Past DateSep 28, 2024Saturday
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10M, 10K trail run | kids run
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Littleton, CO
5 miles point to pointArapahoe County, CO
9. Louisville Trail Race
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Past DateSep 28, 2024Saturday
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13.1M, 10K, 5K trail run
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Louisville, CO
31 miles point to pointBoulder County, CO
10. Prairie Dog Half and 10K/5K
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Past DateSep 28, 2024Saturday
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13.1M, 10K, 5K run | kids run
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Westminster, CO
20 miles point to pointAdams County, COJefferson County, CO
11. Bear Chase Race - Half Marathon & 10K
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Past DateSep 29, 2024Sunday
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13.1M, 10K trail run
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Lakewood, CO
12 miles point to pointJefferson County, CO
12. Boulderthon: Downtown Boulder Marathon
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Past DateSep 29, 2024Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
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Boulder, CO
36 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.