September Classic Races within 50 miles of Aspen, CO
City Location
1. Flaming Foliage Relay
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Sep 5, 2025Friday
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160M relay
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startIdaho Springs, CO79 miles point to pointfinishBuena Vista, CO44 miles point to pointClear Creek County, COChaffee County, CO
2. Aspen parkrun
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Sep 6, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
3. CASA Superhero Run
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Past DateSep 7, 2024Saturday
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5K run | kids run
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Glenwood Springs, CO
36 miles point to pointGarfield County, CO
4. 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
42 miles point to pointSummit County, CO
5. Aspen parkrun
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Sep 13, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
6. Breckenridge Oktoberfest 5K
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Past DateSep 14, 2024Saturday
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5K trail run
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Breckenridge, CO
46 miles point to pointSummit County, CO
7. 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
8. 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
44 miles point to pointChaffee County, CO
9. Aspen parkrun
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Sep 20, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
10. Autumn Run
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Past DateSep 21, 2024Saturday
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26.2M, 13.1M, 10K, 5K run | kids run
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Buena Vista, CO
44 miles point to pointChaffee County, CO
11. Fall Festival 1K
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Past DateSep 21, 2024Saturday
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1K run | 1K adventure race | 1K obstacle run | 1K novelty run
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Fairplay, CO
44 miles point to pointPark County, CO
12. Run the Rockies Half Marathon
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Past DateSep 21, 2024Saturday
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13.1M, 10K run
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Frisco, CO
47 miles point to pointSummit County, CO
13. Sunlight Showdown
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Past DateSep 22, 2024Sunday
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13.1M trail run
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Glenwood Springs, CO
36 miles point to pointGarfield County, CO
14. Aspen parkrun
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Sep 27, 2025Saturday
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5K run
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Aspen, CO
Pitkin County, CO
15. Crested Butte Ultra
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Sep 27, 2025Saturday
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50M, 55K, 35K trail run
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Crested Butte, CO
27 miles point to pointGunnison County, CO
16. Golden Leaf Half Marathon
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Sep 27, 2025Saturday
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13.1M trail run
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Aspen, CO
Pitkin County, CO
17. West Line Winder
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Past DateSep 28, 2024Saturday
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50K, 30K trail run
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Buena Vista, CO
44 miles point to pointChaffee County, CO
18. 14er Fest Races
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Past DateSep 29, 2024Sunday
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14K, 5K trail run
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Buena Vista, CO
44 miles point to pointChaffee County, CO
19. Sawatch Ascent
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Past DateSep 29, 2024Sunday
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50K trail run
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Nathrop, CO
50 miles point to pointChaffee 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.