Leadville Trail 10K
Leadville 124 E. Sixth Street, Leadville, CO, United StatesThis out-and-back course uses the first and last 3.1 miles of the LT100 Run course, featuring paved and dirt roads. Held the weekend of the historic Leadville Trail 100 MTB, […]
TransRockies Run
Surf Hotel & Chateau 1012 Front Loop, Buena Vista, CO, United StatesBased upon the wildly successful TransAlpine-Run in Europe and the TransRockies mountain bike race, TransRockies Run is run on a multi-day point-to-point format which allows athletes to access and traverse […]
Into the Hills Eltuck 10K
Lory State Park 708 Lodgepole Dr, Bellvue, CO, United StatesJoin us each Tuesday evening in August for a fun series of shorter midweek trail races. Our goal is to offer a fun, low-key series of races designed to give […]
Eldorado Springs Run for the Cure
Eldorado Canyon State Park 294 Artesian Drive, Eldorado Springs, CO, United StatesThe Colorado Cancer Foundation returns to Eldorado Springs for its Classic 44th edition of the Eldorado Springs Run for the Cure 4 Mile on August 10th.
San Juan Softie 100
Durango Nordic Center 49786 Hwy 550 N, Durango, CO, United StatesThe softest 100 miler in the San Juans This 100 mile ultra marathon starts and finishes just north of Durango, Colorado. The race will take you through some of the […]
Leadville Trail 100
Leadville 124 E. Sixth Street, Leadville, CO, United StatesThe legendary “Race Across The Sky” 100-mile run is where it all started back in 1983. This is it. The race where legends are created and limits are tested. One […]
Mt Sneffels Marathon
Ouray Ouray, CO, United StatesThe Mt. Sneffels Half-Marathon was created more than 23 years ago by board members of the Mt. Sneffels Education Foundation as a fundraiser to supplement member donations. It is supported […]
Impact Uganda 5K/10K
Howell Construction 8085 E Harvard Ave, Denver, CO, United StatesUPDATE: New Route and New Swag The new route starts at the same location and avoids crossing streets. Check out the new SWAG for this year. The Fifth Annual Impact Uganda Fun […]
Cheyenne Mountain Run
Cheyenne Mountain State Park 410 JL Ranch Heights, Colorado Springs, CO, United StatesThe Cheyenne Mountain Run in Colorado Springs will take place on October 8, 2022 and will feature 3 trail races: a 25K to the top of Cheyenne Mountain for the more advanced trail runner, a 10K for the experienced runners and a 5K trail run for all to enjoy.
Arrowhead Half Marathon
Arrowhead at Beaver Creek 160 Cresta Rd, Edwards, CO, United StatesThe Vail Recreation District is excited to announce a NEW venue for one of our favorite events in the 2021 Dynafit Vail Trail Running Series - The Dynafit Half Marathon and 5K at Arrowhead in Beaver Creek on August 21st.
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.