Event details subject to change. Please confirm all information via event website.
Great Divide Ultra
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 13er
The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race! Seasoned runners and first-timers […]
Crazy Legs 10K
-The race begins at 7:00am and held at Devil’s Backbone Open Space 1725 Hidden Valley Drive in Loveland. Trail conditions can be access through the website https://www.larimer.org/naturalresources/parks/devils-backbone -If the trails […]
Steamboat Marathon
Run alongside the roaring Elk River through the emerald green pastures on Country Road 129 with the snow-capped Rocky Mountains of Colorado all around and find out why the Steamboat […]
Breckenridge Brewery Half Marathon
Breckenridge Brewery - Littleton 2920 Brewery Lane, Littleton, CO, United StatesJoin us for the Breckenridge Brewery Half Marathon & 5k on June 7, 2026. Starting and ending at the Breckenridge Brewery in Littleton, CO. Join us for the Breckenridge Brewery […]
RMRR Bible Park 4K
Bible Park 6802 E Yale Ave, Denver, CO, United StatesEveryone – slow, fast, or in-between – can win at RMRR Trophy Series races. With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great […]
Flamingo Day 5K
Join us for a fun and festive day at Denver's Sloan's Lake Park.
Adidas Terrex 10K Spring Runoff
Vail Village 292 E Meadow Dr, Vail, CO, United StatesChallenge the Vail Valley’s best trail runners along with top professionals at almost 9,000 feet as you compete for a cash purse. This course will truly test your fitness with its constant […]
Deadwood Mickelson Trail Marathon
26.2 Miles of Black Hills, South Dakota Beauty!
Adidas Terrex 20K Trail Run
Vail Village 292 E Meadow Dr, Vail, CO, United StatesCOURSE CHANGE FOR 2026 & BIGGER PRIZE PURSE! A behemoth of running races, the adidas TERREX 20K Trail Run is for the boldest competitors. Destroy a near-half marathon on a difficult […]
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