September Trail Runs in Colorado on Saturdays
1. Cirque Series - Arapahoe Basin
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Sep 6, 2025Saturday
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8.8M trail run
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Keystone, CO
Summit County, CO
2. RexRun For PAWSitivity 5K Trail Run/Walk
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Sep 6, 2025Saturday
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5K trail run | kids run
Virtual OptionMore Information
- -uknkown-, CO
3. Alberta Peak Challenge
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Past DateSep 7, 2024Saturday
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12M, 4M trail run
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Pagosa Springs, CO
Archuleta County, CO
4. Black Squirrel Half Marathon
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Past DateSep 7, 2024Saturday
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13.1M trail run
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Bellvue, CO
Larimer County, CO
5. Devil on the Divide
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Past DateSep 7, 2024Saturday
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50K, 22K trail run
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Empire, CO
Clear Creek County, CO
6. Imogene Pass Run
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Past DateSep 7, 2024Saturday
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17.1M trail run
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startOuray, COfinishTelluride, COOuray County, COSan Miguel County, CO
7. Nielson Two Mile Challenge
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Past DateSep 7, 2024Saturday
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2M trail run
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Colorado Springs, CO
El Paso County, CO
8. Summit UP Run
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Past DateSep 7, 2024Saturday
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5K run | 5K trail run
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Copper Mountain, CO
Summit County, CO
9. Breckenridge Oktoberfest 5K
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Past DateSep 14, 2024Saturday
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5K trail run
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Breckenridge, CO
Summit County, CO
10. 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
Eagle County, CO
11. Ned Ned Run
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Past DateSep 14, 2024Saturday
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13.1M, 10K, 5K trail run
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Nederland, CO
Boulder County, CO
12. Run Rabbit Run
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Past DateSep 14, 2024Saturday
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50M trail run
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Steamboat Springs, CO
Routt County, CO
13. Trail Sisters Women's Half Marathon
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Past DateSep 14, 2024Saturday
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13.1M, 10K trail run
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Buena Vista, CO
Chaffee County, CO
14. Pikes Peak Ascent and Marathon
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Sep 20, 2025SaturdayAscent
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13.3M trail run
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Manitou Springs, CO
El Paso County, CO
15. John Wayne Grit Series - Ridgway
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Past DateSep 21, 2024Saturday
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13.1M, 5K trail run
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Ridgway, CO
Ouray County, CO
16. Mountain Marmot Trail Run
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Past DateSep 21, 2024Saturday
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12M trail run
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Durango, CO
La Plata County, CO
17. Ouray Mountain Trail Run
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Past DateSep 21, 2024Saturday
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13M trail run
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Ouray, CO
Ouray County, CO
18. Red Feather Trail Jamboree
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Past DateSep 21, 2024Saturday
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50M trail run
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Red Feather Lakes, CO
Larimer County, CO
19. Snow Mountain Ranch Trail Festival
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Past DateSep 21, 2024Saturday
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50K, 13.1M, 10K, 5K trail run | 26.2M relay
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Granby, CO
Grand County, CO
20. 24 Hours of Palmer Lake
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Sep 28, 2024Saturday
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24H trail run
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Palmer Lake, CO
El 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.