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2017 ColderBOULDER 5k

ColderBoulder 2017 photos

The 2017 edition of the ColderBOLDER 5k didn’t quite live up to its namesake with temperatures rising into the mid-50s by the time the open wave ran at 9:50 am. But it proved to be ideal conditions as just over 1,800 runners competed in the

2015 Colder Boulder

The 2015 Colder Boulder will be held December 5 on the CU campus. Runners compete in invitational waves for the coveted Cold Penguin medal.