Trail Running calendar near West Yellowstone 2026-2027

Trail races at Rendezvous Ski Trails near West Yellowstone Montana include marathon, half marathon, and 10K distances on Custer Gallatin National Forest trails. The event features chip timing, aid stations, and finisher medals.

A yearly non-profit uphill race at Jackson Hole Mountain Resort, roughly 6.1 miles and 4,100 feet of climb, finishing at the Aerial Tram with proceeds to Friends of Pathways.

A trail race weekend in Cooke City, Montana with 50k, 30k and an 80K option set among mountain scenery and historic mining sites on 8/8 to 8/9/2026.

The Sweet Pea Run in Bozeman offers 5K, 10K and a 5k handcycle race during Sweet Pea Festival weekend. Sponsors and proceeds support local running programs and youth scholarships, and children 12 and under enter free.

A 5K running race at Bridger Brewing in Bozeman on August 12, 2026, presented by the Bozeman Distance Project 501(c)3. Registration runs July 8 to August 12 with a $10 fee.

A remote roughly 20 mile ridge trail race near Bozeman, Montana, run by volunteers with a lottery limited field. The route is technical and exposed; aid stations are volunteer staffed and participants must carry a water vessel.

Trail races in Island Park ID offering a 1K kids run plus 10K, 25K and 50K on natural single track with on-course aid and post-race lunch.

Trail runs at Turpin Meadow Ranch near the Grand Tetons on August 22, 2026 supporting the John Wayne Cancer Foundation with 30K, half marathon and 8K options.

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 three-day mountain running event at Big Sky Resort in Big Sky, Montana on September 11 to 13, 2026, featuring distances from a 1 km kids run to a 50.6-mile Trifecta; registration opens January 6, 2026.

Trail races and a kids run at Eagle Creek Campground near Yellowstone on 12 September 2026. Courses include a 9k with 1000 feet of climb, a 5k with 400 feet of climb, and an untimed 5k walk.

An off-road 18.2 mile trail race with 2,609 ft of climbing through Paradise Valley and Emigrant Gulch, featuring creek crossings, three aid stations, marked technical terrain, and a finish at Chico Hot Springs.

Timed running events at Gallatin Valley Regional Park in Bozeman offer 4 hour, 12 hour and 24 hour options on a flat 1.5 mile loop with a stocked aid station and free race photos.

Zombie Mania on October 10, 2026 is a 5 km loop through Nature Park and Eagle Park where volunteers dressed as zombies try to steal runners' flag belts. A separate 1 mile costume run follows the same parks without zombies.

Trail races on North Menan Butte in Menan, Idaho featuring volcanic terrain, caldera rim views and distances from 5k to 55k each April.