Trail Running Calendar Montana 2026-2027

An inaugural off trail adventure race at Blacktail Mountain Ski Area offering three courses from approximately 5 to 20 miles. Courses are sparsely marked and route details are revealed the day before at packet pickup.

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.

A community wellness trail event at Blood Tribe Timber Limits on August 9, 2025 offering 2K for kids and 5K, 10K run only and 15K run only distances with free registration, chip timing, water stations and cash prize draws.

An inaugural 10k trail race near Columbia Falls that loops through the Cedar Flats Trail system and Flathead National Forest. Registration runs May 27 to July 4 and all proceeds benefit Gateway to Glacier Trails.

A looped trail race at Red Lodge Mountain on August 16, 2026, with 4.3 mile laps and 900 to 1200 ft gain per lap. Options include marathon, half, relay teams and a 4.31 mile Hot Lap.

The Augúst, Montana's second oldest footrace, holds its 58th running in Helena on August 20, 2026. A 5K trail race presented as a minimalist fundraiser for local high school cross-country teams.

Dog Days ULTRA in Missoula, Montana runs August 22-23, 2026 and features timed solo events plus a 24 hour relay. Registration runs March 9 to July 9, with fees listed per event.

A ranch-based running event in Harrison, Montana offering a 1K calf run, 5K, 10K, Tough Udder obstacles and a virtual option, with on-course water stations and event swag.

Experience a fast downhill race through the scenic Little Belt Mountains to historic Harlowton. This charity event features a smooth gravel course with multiple distances and a finish line celebration at a local brewery.

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.

A free trial trail event in Helena, MT offering 14K, 25K and 50K options on McMaster Hills trails with river and mountain views. Minimal course markings and a main aid station at McMaster Hills East Trailhead.

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.