Great Divide Ultra

Mueller State Park 21045 State Highway 67, Divide, CO, United States

Experience the spring-fed meadows, massive rocks of Pikes Peak granite, and sweeping views of Colorado’s most spectacular mountains in the Great Divide Ultras. This Colorado early season 100m, 100k, 50k […]

Colorado Triathlon

Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

Who's ready to kick off the 2022 season?! The Colorado Triathlon is where Colorado comes to race on Saturday June 4th, 2022! The Colorado Triathlon - sprint & olympic distances, […]

$85 – $145

Step Up For Women And Recovery 5K

Fossil Creek Park Lemay Avenue, Fort Collins, CO, United States

This event brings together the community and supports scholarships for women who seek treatment for drug and alcohol addiction. People entering a program often have the commitment to complete treatment […]

PPRR Nielson Challenge

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

Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is […]

PPRR Nielson Challenge

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

Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is […]

Centennial Airport Runway 5K

Wings Over The Rockies 13005 Wings Way, Englewood, CO, United States

Join us on Saturday, June 1, 2024, for the Centennial Airport Runway 5K in support of the Centennial Airport Foundation! Runners and walkers alike will have the chance to take […]

$45

Heart Walk

Sloan's Lake Park 1700 Utica Street, Denver, CO, United States

We're all tied to heart disease and stroke in some way, and we must change that. Join your friends, family and co-workers to be a relentless force for a world […]

Event Series Walk MS

Walk MS

Cheyenne Depot Plaza 1 Depot Plaza, Cheyenne, WY, United States

Walk MS 2024 includes a powerful new experience where you’ll witness how your support changes the lives of people with MS and gets us closer to our ultimate goal: a […]

Aiden’s Adventure 5K

Fountain Creek Regional Park 2010 Duckwood Road, Fountain, CO, United States

Let's help Aiden give back to his community and honor him in such a loving way. Aiden's Adventure 5k is designed to remember Aiden, a sweet, caring, "never met 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.