December Races in Colorado
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.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
City Location
1. Colorado Cold Rush
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Dec 2, 2023Saturday
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50K, 13.1M trail run
More Information
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Colorado Springs, CO
El Paso County, CO
2. All-Out Fa La La
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Dec 2, 2023Saturday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Westminster, CO
Adams County, COJefferson County, CO
3. Aspen parkrun
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Dec 2, 2023Saturday
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5K run
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Aspen, CO
Pitkin County, CO
4. Nielson Two Mile Challenge
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Dec 2, 2023Saturday
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2M trail run
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Colorado Springs, CO
El Paso County, CO
5. Sawmill Trail Runs
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Dec 2, 2023Saturday
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50K, 16M, 8M trail run
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Pine, CO
Jefferson County, CO
6. South Boulder Creek parkrun
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Dec 2, 2023Saturday
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5K run
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Boulder, CO
Boulder County, CO
7. Ugly Sweater 5K
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Dec 2, 2023Saturday
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5K run
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Buena Vista, CO
Chaffee County, CO
8. Chasing Santa 5K
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Past DateDec 3, 2022Saturday
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5K run | kids run
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Colorado Springs, CO
El Paso County, CO
9. Jingle Jog
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Past DateDec 3, 2022Saturday
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2M run
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Denver, CO
Denver County, CO
10. RMRR Trophy Series - December
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Dec 3, 2023Sunday
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4.5M run
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Denver, CO
Denver County, CO
11. Rock Canyon Half Marathon
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Dec 3, 2023Sunday
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13.1M run
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Pueblo, CO
Pueblo County, CO
12. Summit for Life
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Past DateDec 3, 2022Saturday
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2.5M trail run
Virtual OptionMore Information
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Aspen, CO
Pitkin County, CO
13. Rudolph Ramble 5K
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Past DateDec 4, 2022Sunday
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5K run
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Denver, CO
Denver County, CO
14. Aspen parkrun
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Dec 9, 2023Saturday
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5K run
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Aspen, CO
Pitkin County, CO
15. South Boulder Creek parkrun
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Dec 9, 2023Saturday
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5K run
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Boulder, CO
Boulder County, CO
16. WinterFest 5K and Fun Run
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Dec 9, 2023Saturday
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5K run | kids run
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Denver, CO
Denver County, CO
17. ColderBOLDER
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Past DateDec 10, 2022Saturday
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5K run
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Boulder, CO
Boulder County, CO
18. Four Corners Quad Keyah
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Dec 10, 2023Sunday
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26.2M, 13.1M, 5K, 2M run
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Four Corners Monument, CO
Montezuma County, CO
19. Main Street Fun Run
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Past DateDec 10, 2022Saturday
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1M run
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Longmont, CO
Boulder County, CO
20. Santa Cause Run
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Past DateDec 10, 2022Saturday
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5K, 1K run | kids run
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Grand Junction, CO
Mesa 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.