Trail Running calendar near Island Park 2026-2027

Experience world class ridgeline running at the Wildflower Run with four trail distances ranging from a kids 1K to a 50K ultra through fields of mountain wildflowers.

Experience trail running in the Bridger Teton National Forest with races ranging from 15K to 50K. Runners enjoy views of the Grand Teton and mountain wildflowers while spectators utilize local gondolas to follow the action.

Experience the Montana wilderness through a series of certified trail races in 2026. Choose from distances ranging from 5K to 50K with events held in West Yellowstone, Seeley Lake, and Butte.

The Yellowstone Trail Marathon will take place in West Yellowstone on Saturday 11 July 2026. You can run between 5 and 50 kilometers.

Join the 2nd Running of the Bulls Trail Race in Big Sky, Montana on dirt and single track through BSCO trails, with Big Sky Events Arena as the start, finish and festival hub. Run 21K, 11K or a 5K relay and stay for food trucks and awards.

Experience a trail run through the Custer Gallatin National Forest at the gateway to Yellowstone National Park. Choose between marathon, half marathon, or 10K distances on scenic mountain trails.

Trail races in Harriman State Park near Island Park, Idaho, offering distances from a 1k kids loop to a 50k two 25k-loop course, with aid stations, finishers medals and a post-race meal. Participation is limited to protect the park.

Experience high alpine mountain running at Grand Targhee with a 7.1 mile course featuring over 2,200 feet of vertical gain and summits reaching nearly 10,000 feet.

The Rut Mountain Runs is a multi distance mountain running weekend in Big Sky, Montana in September 2026. Events range from a free 1K Runt Run to a 52.5 mile Trifecta with substantial elevation gain and a Lone Peak vertical kilometer.

Experience an 18 mile off road journey through the foothills of Paradise Valley featuring scenic climbs and historic mining trails. This point to point race finishes with a meal and a relaxing swim at Chico Hot Springs.

A playful 5 km loop through Nature Park and Eagle Park where volunteers acting as zombies try to steal runners' flags. A separate 1 mile costume run has no zombies and suits participants who prefer a gentler experience.

Test your endurance in Idaho Falls at this winter backyard ultra. Complete 4.167 miles every hour on a varied terrain course until only one runner remains at the Bonneville County Exhibition Hall.