Colorado
Calendars

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Guide to Races in Colorado

Featured Events

Winter Running Series
Winter 2019-2020


Chilly Cheeks Winter Duathlon Series
Winter 2019-2020


Superior Stocking Run
Dec. 15, 2019


Yeti Chase 5K/10K
Jan. 26, 2020


Ralston Creek Half Marathon & 5K
Feb. 9, 2020


Three Creeks Half Marathon
April 4, 2020

Barkin' Dog Duathlon
April 18, 2020


Mt. Evans Ascent
June 14, 2020


Evergreen Sprint Triathlon
July 19, 2020


Littlefoot Triathlon
Sept. 12, 2020


Winter Running Series
Winter 2019-2020


Chilly Cheeks Winter Duathlon Series
Winter 2019-2020


Superior Stocking Run
Dec. 15, 2019


Yeti Chase 5K/10K
Jan. 26, 2020


Ralston Creek Half Marathon & 5K
Feb. 9, 2020


Colorado Regional Calendars

Welcome to our regional Running, Triathlon, Duathlon, and Snowshoe Calendars. You will find links to events owned and times by Racing Underground, however we list most all Colorado races on these calendars. Colorado has some of the best events in the world, but please verify race info before making the trip!



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