August 10Ks in Colorado
City Location
1. All-Out Runapalooza
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Aug 5, 2023Saturday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Arvada, CO
Jefferson County, CO
2. Human Race
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Aug 5, 2023Saturday
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13.1M, 10K, 5K run | kids run
More Information
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Fort Collins, CO
Larimer County, CO
3. Reece's Roundup
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Aug 5, 2023Saturday
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10K, 5K run
More Information
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Castle Rock, CO
Douglas County, CO
4. Evergreen Town Race
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Aug 6, 2023Sunday
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10K, 5K run
More Information
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Evergreen, CO
Jefferson County, CO
5. Go Half Crazy - Denver
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Past DateAug 6, 2022Saturday
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13.1M, 10K, 5K run
More Information
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Thornton, CO
Adams County, CO
6. Go Half Crazy - Colorado Springs
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Past DateAug 7, 2022Sunday
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13.1M, 10K, 5K run
More Information
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Colorado Springs, CO
El Paso County, CO
7. Boulder Rez Marathon
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Aug 12, 2023Saturday
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26.2M, 19.7M, 13.1M, 10K run | 26.2M relay
More Information
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Boulder, CO
Boulder County, CO
8. Holy Cow Trail Stampede
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Aug 12, 2023Saturday
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10K, 5K run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
9. Longmont Sunrise Stampede
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Aug 12, 2023Saturday
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10K, 2M run
More Information
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Longmont, CO
Boulder County, CO
10. Leadville 10K
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Aug 13, 2023Sunday
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10K run
More Information
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Leadville, CO
Lake County, CO
11. Hometown Half Marathon
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Aug 19, 2023Saturday
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13.1M, 10K, 5K run
More Information
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Colorado Springs, CO
El Paso County, CO
12. Impact Uganda 5K/10K
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Aug 19, 2023Saturday
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10K, 5K run
More Information
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Denver, CO
Denver County, CO
13. Mt Sneffels Marathon
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Aug 19, 2023Saturday
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26.2M, 13.1M, 10K run | kids run
More Information
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Boston Marathon Qualifier
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Ouray, CO
Ouray County, CO
14. Brewer's Cup Challenge
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Past DateAug 20, 2022Saturday
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10K run
More Information
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Colorado Springs, CO
El Paso County, CO
15. Denver Rocks Run 5K/10K
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Aug 20, 2023Sunday
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10K, 5K run
More Information
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Denver, CO
Denver County, CO
16. Hometown Half Marathon - Denver
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Aug 20, 2023Sunday
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13.1M, 10K, 5K run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
17. Boulder Sunset 10K/5K
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Aug 26, 2023Saturday
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10K, 5K run
More Information
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Boulder, CO
Boulder County, CO
18. Ridgway Log Hill Hustle 5K/10K
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Past DateAug 28, 2022Sunday
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10K, 5K run
More Information
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Ridgway, CO
Ouray 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.