September 5Ks in Colorado
1. 10K at 10,000 Feet Trail Run
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Sep 1, 2024Sunday
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10K, 5K trail run
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Steamboat Springs, CO
Routt County, CO
2. Orangetheory 5K at Labor Day Lift Off
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Sep 1, 2024Sunday
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5K run
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Colorado Springs, CO
El Paso County, CO
3. Wine Run 5K at Holy Cross Abbey
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Sep 1, 2024Sunday
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5K run
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Canon City, CO
Fremont County, CO
4. 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
Douglas County, CO
5. 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
Boulder County, CO
6. Aspen parkrun
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Sep 7, 2024Saturday
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5K run
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Aspen, CO
Pitkin County, CO
7. RexRun For PAWSitivity 5K Trail Run/Walk
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Sep 7, 2024Saturday
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5K trail run | kids run
Virtual OptionMore Information
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Aurora, CO
Arapahoe County, CO
8. South Boulder Creek parkrun
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Sep 7, 2024Saturday
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5K run
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Boulder, CO
Boulder County, CO
9. Denver Rocks Run 5K/10K
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Sep 8, 2024Sunday
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10K, 5K run
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Denver, CO
Denver County, CO
10. RMRR Trophy Series - September
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Sep 8, 2024Sunday
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10M, 5K run
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Thornton, CO
Adams County, CO
11. Bark & Brew 5K
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Past DateSep 9, 2023Saturday
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5K run
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Lakewood, CO
Jefferson County, CO
12. Blue Shoe Run for Prostate Cancer
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Past DateSep 9, 2023Saturday
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5K, 1.5M run | kids run
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Denver, CO
Denver County, CO
13. 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
Boulder County, CO
14. Summit Up Trail Run
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Past DateSep 9, 2023Saturday
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9K, 5K trail run
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Copper Mountain, CO
Summit County, CO
15. Waneka Classic
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Past DateSep 9, 2023Saturday
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5K run
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Lafayette, CO
Boulder County, CO
16. 9/11 Heroes Run - Denver
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Past DateSep 10, 2023Sunday
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5K run
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Denver, CO
Denver County, CO
17. Tiger Prowl
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Past DateSep 10, 2023Sunday
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5K run
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Lakewood, CO
Jefferson County, CO
18. Arapahoe County 5K Trail Run
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Sep 12, 2024Thursday
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5K trail run
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- -uknkown-, CO
19. 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
Adams County, COJefferson County, CO
20. Aspen parkrun
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Sep 14, 2024Saturday
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5K run
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Aspen, CO
Pitkin 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.