September Half Marathons within 50 miles of Arvada, CO
1. Labor Day Half Marathon
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Sep 2, 2024Monday
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13.1M, 10K, 5K run
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Parker, CO
26 miles point to pointDouglas County, CO
2. Calarat Challenge Trail Running Festival
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Past DateSep 3, 2023Sunday
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13.1M, 10K, 5K trail run | kids run
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Jamestown, CO
27 miles point to pointBoulder County, CO
3. Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
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Sep 7, 2024Saturday
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26.2M, 13.1M run
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Denver, CO
6 miles point to pointDenver County, CO
4. Ned Ned Run
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Past DateSep 9, 2023Saturday
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13.1M, 10K, 5K trail run
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Nederland, CO
26 miles point to pointBoulder County, CO
5. All-Out Fall Fest
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Sep 14, 2024Saturday
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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
3 miles point to pointAdams County, COJefferson County, CO
6. Bergen Peak Half Marathon
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Sep 14, 2024Saturday
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13.1M trail run
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Evergreen, CO
17 miles point to pointJefferson County, CO
7. Nun Run
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Sep 15, 2024Sunday
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13.1M, 5K run
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Denver, CO
6 miles point to pointDenver County, CO
8. Adams Half & 5K
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Past DateSep 17, 2023Sunday
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13.1M, 5K run
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Brighton, CO
19 miles point to pointAdams County, CO
9. Snow Mountain Ranch Trail Festival
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Sep 21, 2024Saturday
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50K, 13.1M, 10K, 5K trail run | 50K relay
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Granby, CO
50 miles point to pointGrand County, CO
10. Louisville Trail Race
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Sep 28, 2024Saturday
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13.1M, 10K, 5K trail run
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Louisville, CO
12 miles point to pointBoulder County, CO
11. Prairie Dog Half and 10K/5K
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Sep 28, 2024Saturday
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13.1M, 10K, 5K run | kids run
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Westminster, CO
3 miles point to pointAdams County, COJefferson County, CO
12. Bear Chase Race - Half Marathon & 10K
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Sep 29, 2024Sunday
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13.1M, 10K trail run
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Lakewood, CO
7 miles point to pointJefferson County, CO
13. Boulderthon: Downtown Boulder Marathon
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Sep 29, 2024Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
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Boulder, CO
18 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.