Trail Running calendar near West Yellowstone 2026-2027

A mountain trail ultramarathon held from Middle Cottonwood Trailhead with 30K and 55K options on 100% trails, large vertical gain, minimal aid, drop bag support, and a 130-runner cap; finishers receive an Old Gabe hat.

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 community race in Bozeman on July 4, 2026 with 1K, 5K and 10K options plus virtual entries; proceeds support adults with developmental disabilities.

Experience a point to point trail race on the Bangtail Divide Trail near Bozeman Montana. This 38 km event takes runners from Stone Creek to Brackett Creek through mountain landscapes with a field limited to 150 participants.

Mountain trail running near Bozeman, MT with 25 mile and 50 mile backcountry routes across the Gallatin Crest. Routes cross exposed alpine ridgelines and require self-sufficiency and mountain experience.

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.

A trail running event in West Yellowstone, MT on July 11, 2026, organized by Wolf Pack Adventures. Multiple distances from 5K to 50K are offered with published entry fees and online registration ending July 11, 2026.

A trail race at Big Sky Events Arena on July 12, 2026 offering 15 miles, 6.2 miles, and a 3.1 mile team relay. Routes use BSCO trails with dirt paths and single track and include significant elevation gain and mountain views.

A July 18, 2026 Bozeman event offering a **10-mile** trail loop with 2,838 feet of climbing and a **5 km** rolling dirt road fun run, plus a post-race BBQ, beer, and raffle prizes.

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.

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.

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.

A trail race day at Harriman State Park near Island Park, ID with 1k, 10k, 25k and 50k options, scenic forest and meadow courses, on-course aid and finishers medals; registration opens April 1 and closes August 10.

Trail races at Turpin Meadow Ranch in Jackson Hole on August 22, 2026 support the John Wayne Cancer Foundation. Distances include 30K, Half Marathon and 8K with packet pickup at Red Cliffs Lodge and shuttle service to the start.

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 multi day mountain running celebration in Big Sky, Montana in September 2026, featuring races from a 1K Runt Run to an 84K Trifecta and a Lone Peak Vertical Kilometer. The 2026 event is sold out except the free 1K Runt Run.

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.

A fixed time running event at Gallatin Valley Regional Park in Bozeman with a 1.5 mile loop and 24, 12, and 4 hour options. One aid station on course, crew support allowed, and awards for top finishers.

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.