Marathons within 50 miles of Parker, CO
City Location
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
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Boulder, CO
Boulder County, CO
1. Ram Party
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Past DateMay 19, 2024Sunday
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26.2M, 13.1M, 9M, 5K trail run
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Colorado Springs, CO
47 miles point to pointEl Paso County, CO
2. REVEL Rockies
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Past DateJun 1, 2024Saturday
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26.2M, 13.1M run
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Boston Marathon Qualifier
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Denver, CO
19 miles point to pointDenver County, CO
3. Boulder Rez Marathon
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Past DateAug 3, 2024Saturday
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26.2M, 19.7M, 13.1M, 10K run | 26.2M relay
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Boulder, CO
44 miles point to pointBoulder County, CO
4. I'm Bound for Boston Marathon & Half Marathon - Denver
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Past DateAug 4, 2024Sunday
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26.2M, 13.1M run
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Denver, CO
19 miles point to pointDenver County, CO
5. Staunton Rocks! Marathon & Half
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Past DateAug 24, 2024Saturday
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26.2M, 13.1M trail run
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Pine, CO
31 miles point to pointJefferson County, CO
6. The Day Quest - The Edge of Ultra - 26.3
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Past DateSep 1, 2024Sunday
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26.2M run | 26.3M trail run
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Boulder, CO
44 miles point to pointBoulder County, CO
7. Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
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Past DateSep 7, 2024Saturday
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26.2M, 13.1M run
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Denver, CO
19 miles point to pointDenver County, CO
8. BINGO! Trail Runs
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Nov 9, 2024Saturday
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50M, 26.2M, 13.1M, 10K trail run
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Byers, CO
31 miles point to pointArapahoe County, CO
9. Runs With Scissors Races
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Apr 26, 2025Saturday
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50K, 26.2M, 13.1M run
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Brighton, CO
32 miles point to pointAdams County, CO
10. Valkyrie Trail Race
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May 10, 2025Saturday
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50K, 26.2M, 30K, 13.1M, 8M, 4M trail run
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Colorado Springs, CO
47 miles point to pointEl Paso County, CO
11. Denver Colfax Marathon
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May 18, 2025Sunday
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26.2M, 13.1M, 10M run | 26.2M relay
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Boston Marathon Qualifier
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Denver, CO
19 miles point to pointDenver County, CO
12. Pikes Peak Ascent and Marathon
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Sep 21, 2025SundayMarathon
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26.2M trail run
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Manitou Springs, CO
46 miles point to pointEl Paso County, CO
13. Boulderthon: Downtown Boulder Marathon
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Sep 28, 2025Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
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Boulder, CO
44 miles point to pointBoulder County, CO
14. Colorado Springs Marathon
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Oct 4, 2025Saturday
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26.2M, 13.1M, 5K run | kids run
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Colorado Springs, CO
47 miles point to pointEl Paso 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.