Trail Running Calendar Montana 2026-2027

The Bob Marshall Trail Races in Seeley Lake, MT on July 18, 2026 offer distances from 10K to 50K on ski trails, singletrack and Forest Service roads near the Bob Marshall Wilderness. The event includes aid stations, chip timing and finisher..

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.

A free one-day trail event on 07/18/2026 at Sweet Pine near Browning, MT, featuring 10K, 5K and 1-mile races with registration open 2026-06-14 to 2026-07-18; some races list an 8-year minimum age.

A 100 mile trail race through the Crazy Mountain Range from Wilsall to Lennep, Montana on July 24-25, 2026, passing Apsaalooke lands, jagged cliffs, scree fields, and high alpine lakes with live tracking and family ranch host sites.

Trail race near Butte, Montana on the Continental Divide offering 25K and 50K routes with historic railroad sections, marked and chip timed course, aid stations, finish refreshments, and participant medals and race items.

A 3.8 mile, 2,200 ft hill climb to the Summit House at Whitefish Mountain Resort on July 25, 2026, with lift tickets down, race swag, prizes, and categories for adults, juniors, dogs, and a Birthday Club.

An open 4.4 mile event along the Swan River in Bigfork, Montana, with start and finish at Lake Baked. Proceeds support a TFC campaign offering retreats and education in cold plunging and heat therapy for people with TBI and PTSD.

Trail races at Rendezvous Ski Trails near West Yellowstone offer marathon, half marathon, and 10K courses through Custer Gallatin National Forest. The event is chip timed, has marked courses and aid stations, and carries Forest Service auth..

Trail races in the Elkhorn Mountains near Helena, MT with 50 Mile, 50K and 13.1 Mile options on remote, rocky single track and primitive roads, substantial elevation gain, multiple aid stations, and possible wildlife encounters.

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, a no-paper-cup policy, a $600 Oh Hell Bell cash giveaway, and proceeds supporting local trail maintenance.

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 on private ranch land in Clancy, Montana, where runners complete repeated 4.2 mile loops each hour until one runner remains; the final winner receives a 10,000 USD prize.

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.

Experience a true off trail adventure at Blacktail Mountain Ski Area where navigation is key. Choose from distances up to 20 miles and explore the Montana wilderness through a unique route of your own making.

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.