October Races within 50 miles of Boulder, CO

Clear your browsing data in order to view the new map.
Saturday Sunday Monday Tuesday Wednesday Thursday Friday Multiple
Sat Sun Mon Tue Wed Thu Fri Multiple
Hide Map
Specify Date Range
Start Date
End Date

Event Category

Click Here to find out what Classic, Multisport, and Variety mean.

To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.

1. Castle Rock Trail Festival
2. Colorado Brewery Running Series - Prost Brewing
3. Just for J Superhero 5K
4. Louisville Trail Race
5. Runway 5K Run for the Angels
6. Rut Run 5K
7. Second Wind Walk/Run
8. South Boulder Creek parkrun
9. Tommyknocker 12-Hour and Mine Shaft Half
10. Healthy Kids Running Series - Aurora
11. Hot Chocolate 15K/5K Denver
12. Its Fall Yall 5K and K9 Canter 1M Fun Run
13. Long View Marathon
14. Long View Marathon
15. RMRR Trophy Series - October
16. CSU Homecoming 5K
17. Grace Race 5K
18. Great Pumpkin Haul
19. Pete and Paul 5K
20. Pre Dress-Up Dash

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.