September Half Marathons within 100 miles of Lafayette, CO

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Featured Listing
1. Boulderthon: Downtown Boulder Marathon
1. Labor Day Half Marathon
2. Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
3. All-Out Fall Fest
4. Spooky Sprint
5. Nun Run
6. Spooky Sprint
7. Autumn Run
8. Fall Equinox Marathon
9. Run the Rockies Half Marathon
10. Prairie Dog Half and 10K/5K
11. Boulderthon: Downtown Boulder Marathon
12. Center of the Nation Series - Day 1

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.