September Classic Races in Colorado
1. 10K at 10,000 Feet Trail Run
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Sep 1, 2024Sunday
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10K, 5K trail run
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Steamboat Springs, CO
Routt County, CO
2. Orangetheory 5K at Labor Day Lift Off
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Sep 1, 2024Sunday
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5K run
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Colorado Springs, CO
El Paso County, CO
3. Wine Run 5K at Holy Cross Abbey
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Sep 1, 2024Sunday
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5K run
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Canon City, CO
Fremont County, CO
4. Labor Day Half Marathon
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Sep 2, 2024Monday
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13.1M, 10K, 5K run
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Parker, CO
Douglas County, CO
5. Breck Crest Mountain Marathon
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Past DateSep 3, 2023Sunday
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23M, 13.1M, 10K trail run
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Breckenridge, CO
Summit County, CO
6. Calarat Challenge Trail Running Festival
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Past DateSep 3, 2023Sunday
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13.1M, 10K, 5K trail run | kids run
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Jamestown, CO
Boulder County, CO
7. Lakewood Trail Series
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Sep 4, 2024Wednesday
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7M, 4M trail run
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Lakewood, CO
Jefferson County, CO
8. Roost Rebellion Relays
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Sep 4, 2024Wednesday
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4M relay
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Denver, CO
Denver County, CO
9. Flaming Foliage Relay
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Sep 6, 2024Friday
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160M relay
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startIdaho Springs, COfinishBuena Vista, COClear Creek County, COChaffee County, CO
10. Alberta Peak Challenge
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Sep 7, 2024Saturday
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12M, 4M trail run
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Pagosa Springs, CO
Archuleta County, CO
11. Aspen parkrun
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Sep 7, 2024Saturday
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5K run
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Aspen, CO
Pitkin County, CO
12. Black Squirrel Half Marathon
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Sep 7, 2024Saturday
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13.1M trail run
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Bellvue, CO
Larimer County, CO
13. Cirque Series - Arapahoe Basin
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Sep 7, 2024Saturday
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8.8M trail run
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Keystone, CO
Summit County, CO
14. Devil on the Divide
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Sep 7, 2024Saturday
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50K, 22K trail run
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Empire, CO
Clear Creek County, CO
15. Imogene Pass Run
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Sep 7, 2024Saturday
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17.1M trail run
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startOuray, COfinishTelluride, COOuray County, COSan Miguel County, CO
16. Nielson Two Mile Challenge
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Sep 7, 2024Saturday
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2M trail run
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Colorado Springs, CO
El Paso County, CO
17. RexRun For PAWSitivity 5K Trail Run/Walk
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Sep 7, 2024Saturday
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5K trail run | kids run
Virtual OptionMore Information
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Aurora, CO
Arapahoe County, CO
18. Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
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Sep 7, 2024Saturday
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26.2M, 13.1M run
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Denver, CO
Denver County, CO
19. South Boulder Creek parkrun
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Sep 7, 2024Saturday
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5K run
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Boulder, CO
Boulder County, CO
20. Denver Rocks Run 5K/10K
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Sep 8, 2024Sunday
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10K, 5K run
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Denver, CO
Denver 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.