Running races in Boulder, CO — January 2027

5 races within 25 miles, Fri, Jan 1 – Sun, Jan 31.

Fri Jan 1 10:00am

5K $44 20.6 mi away

Sat Jan 9 9:00am

5K10KHalf marathon $50 19.5 mi away

Sat Jan 9 9:00am

5K4.1 Miles $25 22.7 mi away

Sun Jan 17 9:40am

5K10K $44 11.3 mi away

Sat Jan 30 9:00am

5K10KHalf marathon $32 17.5 mi away

Other months in Boulder, CO