Trail Running Calendar Wyoming 2025-2026

The Grand Targhee Wildflower Run is a two-day trail running event held at Grand Targhee Resort in Alta, Wyoming, featuring four races: a 50K ultra, half marathon, 10K, and a 1K kids' race for ages 6-12. The 50K race on July 5th offers a challenging course along high-elevation ridgelines and famous t..

The Bear River Trail Race, held in Evanston, Wyoming, offers a scenic trail running experience along the Bear River and through Bear River State Park. This inaugural event features three distances: a 10K, half marathon, and 17-mile race, catering to various skill levels. The courses combine lush riv..

The Teton Mountain Runs is a trail running event held at Jackson Hole Mountain Resort in Teton Village, Wyoming. It features three race distances: the Cody Peak 50K, Cirque 30K, and Wild 15K, taking place over two days in July. Runners experience world-class mountain trails within the Bridger-Teton..

The Skunk Hollow Sneaker Chase & Backyard Ultra takes place at Casper Mountain Trails Center in Casper, Wyoming. The event offers two race options: an 8-mile run consisting of two 4.17-mile laps, and Wyoming's first true Backyard Ultra, featuring a 4.17-mile loop run every hour until only one runner..

The Teton Mountaineering Cache Creek Trail Run is a scenic 18K (approximately 11 miles) trail race held annually in Jackson, Wyoming, within the Bridger-Teton National Forest. Celebrating its 45th year in 2025, the event features a challenging course that starts near Snow King Resort, ascending Cach..

El Vaquero Loco is a trail running event held in Western Wyoming, featuring two challenging races: a 50k and a 31k. The 50k race starts at Cottonwood Lake, which also serves as the finish line for both distances, while the 31k begins at Canyon View Park in Afton. Established in 2004, this event offe..

The Wyoming Range 100-Mile Endurance Run is a challenging ultra-marathon held in southwest Wyoming within the Bridger-Teton National Forest. Covering approximately 105 miles with 24,000 feet of elevation gain, the point-to-point course traverses rugged high country, including the Wyoming Range Natio..

The Med Bow Rail Marathon and Half Marathon, held in the scenic Medicine Bow National Forest near Laramie, Wyoming, offers runners a unique high-elevation challenge. The marathon covers the entire 21-mile Medicine Bow Rail Trail, averaging 8,926 feet in elevation, crossing briefly into Colorado befo..

The Grace Race in Buffalo, Wyoming, is a scenic running and hiking event held near the Big Horn Mountains. Participants can choose from three distances: 5K, 10K, and 25K, offering options for various skill levels. The race takes place at George Washington Park, providing a beautiful natural setting...

The Night Crawler Endurance Challenge is a unique overnight solo ultramarathon held on Casper Mountain in Wyoming, featuring 4-hour and 12-hour race options. Set at 8,100 feet elevation, runners traverse forested trails starting and finishing at the Nordic stadium near the Casper Mountain Trails Cen..

The Antelope Dash is a trail running event held at Curt Gowdy State Park near Cheyenne, Wyoming. It features 4-mile and 8-mile races that traverse rolling hills and winding trails through a scenic landscape of aspens, pines, reservoirs, streams, granite rock formations, and hoodoos. The course start..

The MAC (Meeteetse Absaroka Challenge) is a challenging trail running event held near Meeteetse, Wyoming, in the scenic Shoshone National Forest. It features two distances: a demanding 15K course with steep climbs, high elevation, and rugged terrain through grizzly bear country, and a fun, accessibl..

The Cirque Series at Grand Targhee, Wyoming, is a challenging 7.1-mile mountain running race featuring 2,212 feet of vertical gain. Starting at the base of Grand Targhee Resort (7,860 ft elevation), runners ascend steep service roads and single-track trails through scenic aspen groves and spruce for..

The Jelm Mountain Run, held in Southeast Wyoming near Jelm Mountain, offers two challenging distances: a 10+ mile out-and-back course and a 50k race that covers the 10-mile route three times. The course features rugged jeep roads with over 2,000 feet of elevation gain, starting at 7,600 feet and cli..

The Wolf Creek Wrangle is a challenging trail running event held annually at the historic Eatons' Ranch near Wolf, Wyoming, under the eastern slopes of the Bighorn Mountains. Scheduled for September 20, 2025, it offers four rugged distances: 5, 7, 13.1, and 18 miles. Known as the "toughest trail in..

Run the Red Desert is an annual ultra-marathon held in South Pass City, Wyoming, celebrating the unique Red Desert landscape. The event features 50K and 25K loop courses starting and finishing at the historic South Pass City site. Runners experience the rugged high desert steppe ecosystem, with scen..

The Sunrise Scramble is a unique night trail running event held at Glendo State Park in Wyoming, about three hours from Denver. Participants race from sunset to sunrise, with options to run for 3, 5, or approximately 10 hours. The course features five looped trails ranging from 1.4 to 13.6 miles, ea..