December Races in Colorado

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
Upcoming All Dates
Specify Date Range
Start Date
End Date
Classic Multisport Variety Event Category

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.

  • select a city
  • to enable this menu
Name Open Date Close Date
With Virtual Option
1. Colorado Cold Rush
2. All-Out Fa La La
3. Aspen parkrun
4. Nielson Two Mile Challenge
5. Sawmill Trail Runs
6. South Boulder Creek parkrun
7. Ugly Sweater 5K
8. Chasing Santa 5K
9. Jingle Jog
10. RMRR Trophy Series - December
11. Rock Canyon Half Marathon
12. Summit for Life
13. Rudolph Ramble 5K
14. Aspen parkrun
15. South Boulder Creek parkrun
16. WinterFest 5K and Fun Run
17. ColderBOLDER
18. Four Corners Quad Keyah
19. Main Street Fun Run
20. Santa Cause Run

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.