Boulder, CO

Running Races in Boulder, CO

Find runs and races near you with our Boulder, CO running calendar. Find your next 5K, 10K, half marathon, road race, trail run, marathon, ultra, and everything in between.

Events at this location
Today

BOLDERBoulder 10K

Boulder, CO
10K

Colorado Triathlon

Boulder, CO
Sprint Triathlon, Olympic Triathlon, Duathlon

Ironman 70.3 Boulder

Boulder, CO
Other Triathlon

Pearl Street Mile

Boulder, CO
1 Mile, Kids Run

Boulder Sunrise 10K and 5K

Boulder, CO
5K, 10K

Boulder Sunrise Triathlon

Boulder, CO
Sprint Triathlon, Olympic Triathlon, Duathlon

Boulder Peak Triathlon

Boulder, CO
Olympic Triathlon, Duathlon

Tri Boulder

Boulder, CO
Sprint Triathlon, Olympic Triathlon, Other Triathlon

Boulder Rez Marathon

Boulder, CO
10K, Half Marathon, 20 Mile, Marathon, Relay (Running)

Rocky Mountain Tri Fest

Boulder, CO
Super Sprint Triathlon, Sprint Triathlon, Kids Run

Boulder Sunset 10K/5K

Boulder, CO
5K, 10K

Boulder Sunset Triathlon

Boulder, CO
Sprint Triathlon, Olympic Triathlon, Duathlon

Harvest Moon Long Course Triathlon

Boulder, CO
Other Triathlon, Duathlon

Boulderthon: Downtown Boulder Marathon

Boulder, CO
5K, 10K, Half Marathon, Marathon, Kids Run

Colorado Brewery Running Series

Boulder, CO
5K