September Classic Races in Colorado

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Name Open Date Close Date
With Virtual Option
1. 10K at 10,000 Feet Trail Run
2. Orangetheory 5K at Labor Day Lift Off
3. Wine Run 5K at Holy Cross Abbey
4. Labor Day Half Marathon
5. Breck Crest Mountain Marathon
6. Calarat Challenge Trail Running Festival
7. Lakewood Trail Series
8. Roost Rebellion Relays
9. Flaming Foliage Relay
10. Alberta Peak Challenge
11. Aspen parkrun
12. Black Squirrel Half Marathon
13. Cirque Series - Arapahoe Basin
14. Devil on the Divide
15. Imogene Pass Run
16. Nielson Two Mile Challenge
17. RexRun For PAWSitivity 5K Trail Run/Walk
18. Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
19. South Boulder Creek parkrun
20. Denver Rocks Run 5K/10K

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.