Canceled Dog Days of Summer 5K

Dawson Park 1899 Harvard St, Longmont, CO, United States

Come and run your heart out with friends and family; the four legged and human kinds alike! Dog Days of Summer is a 5k hosted by Evolve Health and Wellness […]

Hometown Half Marathon

Westminster Promenade 10600 Westminster Blvd, Westminster, CO, United States

Join us for the annual Hometown Half Marathon & 5k/10k! A run local-themed event that is perfect for the whole family. The fun includes great swag (designer shirt, custom medal), […]

Pancake Stampede 5K

Hudson Gardens and Event Center 6115 S Santa Fe Dr, Littleton, CO, United States

Work up an appetite for a deluxe breakfast at The Pancake Stampede 5K on August 15th! The race is a part of Littleton's Western Welcome Week celebration and held before the annual pancake breakfast at Geneva Park. The 5K takes place at Hudson Gardens.

SHE Power 5K/10K

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

The SHE Power 10K & 5K is an event designed to empower women of all ages and abilities (Sorry guys, no men allowed in this one).  Join us in beautiful Denver […]

Leadville Trail 10K

Leadville 124 E. Sixth Street, Leadville, CO, United States

This 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 States

Based 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 […]

Eldorado Springs Run for the Cure

Eldorado Canyon State Park 294 Artesian Drive, Eldorado Springs, CO, United States

The 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.

$30

San Juan Softie 100

Durango Nordic Center 49786 Hwy 550 N, Durango, CO, United States

The 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 States

The 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 […]

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.