Trail Running calendar near Teton County 2026-2027

Two days of trail races at Grand Targhee on July 4 and 5, 2026 offering 50K, 22K, 10K and a 1K kids race. Each race is capped at 200 entries, features aid stations and podium awards, and is a cupless event.

A weekend of alpine trail races at Jackson Hole Mountain Resort featuring 50K, 30K, and 15K routes that reach Cody Peak and Rendezvous Mountain, with aid stations, volunteer support, and prizes for top finishers.

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.

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.

Trail races at Turpin Meadow Ranch in Jackson Hole support the John Wayne Cancer Foundation with 30K, half marathon, and 8K options; finishers receive a shirt and mug and weekend events are centered at Red Cliffs Lodge.

Trail races at Grand Targhee on August 29, 2026 cover 7.1 miles with 2,212 feet of vertical gain across Sport, Expert, and Pro divisions plus a volunteer category. Per race prizes and season points are awarded and the field is capped at 500..

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.