18 upcoming events
The Desert RATS Trail Running Festival transforms Fruita, Colorado’s high desert terrain into a three-day celebration of trail running every…
Presented by Gemini Adventures
Adventure Fest combines mountain biking, gravel cycling, and trail running into a single weekend celebration of backcountry racing in Fruita,…
Presented by Gemini Adventures
Part of Adventure Fest’s multi-sport weekend celebration, this half-marathon showcases Fruita’s pristine desert singletrack at its early-season best. The 13.8-mile…
Presented by Gemini Adventures
The Bighorn Trail Run stands as one of the most demanding ultramarathons in the Rocky Mountains, threading through the remote…
Presented by UTMB World Series
This intensive three-day training camp prepares runners for the legendary Leadville Trail 100, offering guided exploration of key course sections…
Presented by Leadville Race Series
The Leadville Trail Marathon and Heavy Half put you through arguably the nation’s toughest and highest-altitude marathon experience. The route…
Presented by Leadville Race Series
The Hardrock 100 Endurance Run covers 102.5 miles with 33,197 feet of climbing and descent through Colorado’s San Juan Range…
Presented by Rocky Mountain Slam Series
The Silver Rush 50 Run covers 50 miles and 7,942 feet of elevation gain through Colorado’s high Rocky Mountain mining…
Presented by Life Time Events
This challenging mountain trail run connects the four peaks of the Aspen Snowmass area—Aspen Mountain, Aspen Highlands, Buttermilk, and Snowmass—across…
Presented by Aspen Snowmass Events & Experiences
Set against Grand Mesa, one of the world’s largest flat-top mountains, this trail running event combines technical high-altitude terrain with…
Presented by Best Slope Events
The Emerald Mountain Epic Trail runs on Sunday as part of a two-day mountain bike and trail running festival that…
Presented by Emerald Mountain Epic
This six-day stage race traverses 120 miles of Colorado’s most rugged backcountry with over 20,000 feet of elevation gain, running…
Presented by TransRockies Race Series
The Leadville 10K offers trail runners a taste of the legendary “Race Across the Sky” course without committing to the…
Presented by Leadville Race Series
The Leadville Trail 100 Run stands as one of ultrarunning’s most storied challenges, born from a 1983 effort to revitalize…
Presented by Leadville Race Series
The Ned Ned Trail Fest celebrates over 40 years of trail running legacy in Nederland, Colorado, making it one of…
Presented by Peak to Peak Endurance
This 100-mile point-to-point course from Logan, Utah to Fish Haven, Idaho stands as one of the most prestigious qualifiers in…
Presented by Western States 100 Qualifier
Mad Moose Events brings runners to Crested Butte each fall for a challenging high-altitude experience across some of Colorado’s most…
Presented by Mad Moose Events
Recognized by Trail Runner Magazine as one of “America’s 14 Most Scenic Races,” this intimate half marathon caps at 750…
Presented by Aspen Parks & Recreation
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