Upcoming 5K Races Near Boulder, CO in December, 2025

All-Out Fa La La

Westminster, CO

Saturday, December 6th, 2025

WinterFest 5k & Fun Run

Thornton, CO

Saturday, December 13th, 2025

Santa Catch 5k & 10k

Windsor, CO

Saturday, December 13th, 2025

Santa's Dash for Ca$h

Denver, CO

Saturday, December 20th, 2025

Ugly Sweater 5K

Denver, CO

Sunday, December 21st, 2025

Candy Cane Course - Denver

Denver, CO

Saturday, December 27th, 2025

Candy Cane Course - Denver

Westminster, CO

Saturday, December 27th, 2025

Steve's Event Page

Morrison, CO

Wednesday, December 31st, 2025

Resolution Run 5K

Fort Collins, CO

Wednesday, December 31st, 2025