Expo Park XC Runs

Expo Park 10955 E Exposition Ave, Aurora, CO, United States

Old-school cross-country style courses with creek crossings and bale jumps. Youth races 1k - 4k. All-ages 5k. Individuals and teams.

$20
Event Series PPRR Fall Series

PPRR Fall Series II

North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United States

The Fall Series consists of four trail races in four different city/county parks. The trails range from well-maintained to rocky with tree roots. Each event is a unique challenge at […]

Canyonlands Ultra

Behind the Rocks Trailhead Moab, UT, United States

Canyonlands 100 Mile, 125K, 50 Mile, Marathon, Half Marathon, and 15K Canyonlands Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks […]

CSU Homecoming 5K

CSU Oval Fort Collins, CO, United States

The Homecoming Race will take place on the Oval for our traditional course. All ages and abilities are welcome. Proceeds from the Homecoming Race benefit the ongoing research efforts and […]

Beware the Bear Trail Races

Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United States

Run the original Bear Creek Lake Park trail race - the Beware the Bear Trail Races - on October 17th. This trail race consists of a 14.2K or a 5K. Or do them both with the double! There is also a kids 1K.

$30

Race to Cure Sarcoma 5K

Berkeley Lake Park 4601 W 46th Ave, Denver, CO, United States

The Race to Cure Sarcoma (RTCS) is the premier run/walk series in the United States, focused on raising awareness, providing education, and research funds for sarcoma. Each year, the Sarcoma Foundation of […]

Trick or Trot 5K

Apex Center 13150 W 72nd Ave, Arvada, CO, United States

Join the Apex Park and Recreation District Foundation for the inaugural Trick or Trot 5K! Runners and walkers of all ages and abilities are all welcome to join us for […]

Foundry Halloween 5K

Soda Creek Elementary School 220 Park Avenue, Steamboat Springs, CO, United States

A relatively new event to close out the Steamboat Springs Running Series season, bringing people of all ages together to celebrate Halloween in a safe, sober and fun way. The […]

Run Fur Fun Spooktacular 5K

Odell Brewing Company 800 East Lincoln Avenue, Fort Collins, CO, United States

Save the date for our fun and festive fall race: Run Fur Fun Spooktacular! On Saturday, October 28th, we’ll be taking over SweetWater Brewing Company with a spooky 5k race […]

YMCA Creepy Crawl 5K

Palmer Lake Regional Park 199 County Line Road, Palmer Lake, CO, United States

Our annual "spooky themed" race starts at the Palmer Lake Regional Recreation Area.  We head down the scenic Santa Fe Trail for a bit then turnaround and finish with a […]

Please click here to submit your event for FREE to our online calendar.
We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.