September 10Ks within 400 miles of Aspen, CO
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. 10K at 10,000 Feet Trail Run
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Past DateSep 1, 2024Sunday
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10K, 5K trail run
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Steamboat Springs, CO
89 miles point to pointRoutt County, CO
2. 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
99 miles point to pointBoulder County, CO
3. 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
112 miles point to pointDouglas County, CO
4. Louis Tewanima Footrace
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Past DateSep 1, 2024Sunday
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10K, 5K trail run
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Second Mesa, AZ
305 miles point to pointNavajo County, AZ
5. Run Santa Fe
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Past DateSep 1, 2024Sunday
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10K, 5K run | kids run
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Santa Fe, NM
247 miles point to pointSanta Fe County, NM
6. Payson Onion Days 10K/5K
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Past DateSep 2, 2024Monday
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10K, 5K run
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Payson, UT
267 miles point to pointUtah County, UT
7. Wellsville Founders Day Fun Run
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Past DateSep 2, 2024Monday
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10K, 5K, 1M run
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Wellsville, UT
319 miles point to pointCache County, UT
8. Brineman Triathlon
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Sep 5, 2025Friday
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half, olympic, sprint triathlon | 10K run
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Syracuse, UT
307 miles point to pointDavis County, UT
9. Runtastic NEBO
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Sep 6, 2025Saturday
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26.2M, 13.1M, 10K, 5K run
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Boston Marathon Qualifier
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Payson, UT
267 miles point to pointUtah County, UT
10. Old Bill's Fun Run
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Past DateSep 7, 2024Saturday
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10K, 5K run
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Jackson Hole, WY
362 miles point to pointTeton County, WY
11. T-Bird Trek
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Sep 7, 2025Sunday
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13.1M, 10K, 5K run
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Casper, WY
253 miles point to pointNatrona County, WY
12. Chips & Salsa Half Marathon
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Past DateSep 8, 2024Sunday
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13.1M, 10K, 5K run | kids run
Virtual OptionMore Information
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Albuquerque, NM
284 miles point to pointBernalillo County, NM
13. 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
104 miles point to pointDenver County, CO
14. Navajo Code Talker 10K
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Past DateSep 8, 2024Sunday
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10K run
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Window Rock, AZ
270 miles point to pointApache County, AZ
15. 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
105 miles point to pointAdams County, COJefferson County, CO
16. Buffalo Bill Cody Races
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Past DateSep 14, 2024Saturday
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13.1M, 10K run
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Cody, WY
387 miles point to pointPark County, WY
17. Free Spirit 5K/10K
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Past DateSep 14, 2024Saturday
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10K, 5K run
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Hays, KS
398 miles point to pointEllis County, KS
18. Gallup Madd 10K, 5K, and 2-mile walk
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Past DateSep 14, 2024Saturday
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10K, 5K run
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Church Rock, NM
270 miles point to pointMcKinley County, NM
19. Kokopelli 10K & 5K Run
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Past DateSep 14, 2024Saturday
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10K, 5K run
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Hurricane, UT
370 miles point to pointWashington County, UT
20. Meadowgold Trail Run
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Past DateSep 14, 2024Saturday
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10K, 5K trail run
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Minturn, CO
34 miles point to pointEagle 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.