Trail Running Calendar Montana 2026-2027

A roughly 5K trail race at Dover Park in Billings, Montana, serving as the final race of the Free 3 series. The course runs on dirt trails, includes park views, and a potluck follows; the event is free for Yellowstone Rim Runners.

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.

A community running event at Pompeys Pillar on September 13, 2026 featuring a 5K trail race and a 1 mile run or walk for ages 5 to 14, with entry items, snacks, and prizes included.

Experience a historic re-enactment through the rugged trails of Missouri Headwaters State Park. This unique 7.5 mile run features deep mud, river crossings, and wild Montana terrain for a limited field of 300 participants.

A first annual 4.06K fun run through Playfair Park and midtown Missoula with a tailgate themed finish featuring fried chicken and beer. Registration opens June 16, 2026 and the fee is $35.

Trail runs in the McMaster Hills near Helena MT offering 14K, 25K and 50K loop courses; 2026 is a free trial with limited course markings and basic aid stations.

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.

A 9 km (5.6 miles) trail race in Helena, Montana, with roughly 1,300 feet of elevation change and more than 4 miles of single-track. The 50th edition climbs Mount Helena and returns to Last Chance Gulch with mountain and city views.

Obstacle course races at Washington Grizzly Stadium in Missoula on September 26, 2026 offer 3k, 5k, a double 10k, kids and All Abilities categories. Teams and spectators are included and net proceeds support Opportunity Resources Inc.

Trail races on September 26, 2026 near Taft, Montana along the Route of the Hiawatha. Distances include 26.2 miles, 13.1 miles and 10K, with a virtual option and varying entry fees.

Trail races of 20 km, 10 km, 5 km and a 1 km kids race take place at Crosscut Mountain Sports Center near Bozeman on September 27, 2026. The Bobcat 5 km directs proceeds to the Montana State University Nordic Ski Team.

Experience the beauty of Northwest Montana with a variety of trail races ranging from a family fun run to a technical 50k ultramarathon. Run through scenic forests and lakes while supporting the local trail system.

A point to point trail race of about 10.5 miles through Lolo National Forest along the Clark Fork River on 10 April 2026. The finish is at Quinn's Hot Springs Resort with post-race food, drinks and hot pool access; dogs are not allowed.

Experience an out and back ultramarathon along the North Fork of the Flathead River near Glacier National Park. This event features gravel roads with 2300 feet of elevation gain and stunning views of the Northern Rockies.

A fall run at Riverfront Park on Oct 17, 2026 with 1, 2 and 3 mile options, pumpkin pickup for each entrant, costume prizes and a 350-runner limit.

An autumn community festival in Hungry Horse on October 17, 2026, featuring an official 5k, children's fun run and costume parade, contests, auctions, and family activities. Admission is free while some competitions have entry fees.

A trail race in Missoula that starts and finishes near the university, climbing multiple summits with 8,000+ feet of vertical ascent. Routes circumnavigate the Pattee Creek Watershed and include under two miles of pavement.

A team cross-country meet in the Billings region where Montana runners compete over a 5K course for a traveling trophy; age- and gender-based categories are offered and entry is listed at $30.