Trail Running Calendar Montana 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.

Mountain trail races in the Elkhorn Mountains near Helena, Montana, offering 50 Mile, 50K and 13.1 Mile courses on remote single track with significant elevation gain and multiple aid stations.

Backyard ultra at Foys Lake with a 4.167-mile loop each hour; a solo last-person-standing format and a team relay option with a 24-hour limit, plus a 3K kids fun run.

Trail races of 2, 4, 6 and 8 miles at Phipps Diamond X Park near Billings with marked courses, aid stations, awards and a cash giveaway.

A trail event near Lewistown, Montana on August 1, 2026, offering a 10K loop trail run with significant elevation gain and a separate 6K out and back hike, with packet pickup and shuttle service to the trailhead.

A backyard ultra at Ponderosa Ranch in Clancy, Montana: runners complete a 4.167-mile loop each hour until one person remains. The self-supported event uses marked and GPS courses, variable terrain, and on-site crew areas with limited servi..

A 15K trail race at Montana Snowbowl with a 4.65 mile climb to Grizzly Chair, a 4.65 mile single-track descent on Beargrass Highway, 2,150 ft of elevation gain, chip timing, and a field capped at 250 participants.

Experience the beauty of Mission Canyon during the Swift Bear Trail Run in Hays Montana. Choose between 10 mile 20 mile or 50K distances featuring mountain loops and varied terrain during the annual Hays Powwow.

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.

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.

Trail event near Waterton Lakes with chip timing, water stations, and 2K, 5K, 10K and 15K distances plus gift card 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.