Trail Running Calendar Montana 2026-2027

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.

Trail out and back races near Kading Campground with 15 km and 30 km options, creek crossings and mountain views. Post-race food, beverages and prizes are available.

Experience an all-terrain trail event at the edge of the Bob Marshall Wilderness in Montana. Runners navigate singletrack and mountain roads across distances from 10K to 50K in a landscape home to diverse local wildlife.

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.

Experience a unique trail race through historic train tunnels and across towering trestles in Montana. Run along the Continental Divide Trail on a course featuring rolling terrain and scenic mountain passes.

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.

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.

Trail races in the Elkhorn Mountains near Helena, MT, on technical single track and primitive roads. Events offer 50 Mile, 50K and 13.1 Mile courses 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, 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.

ROO Last Man Standing is a backyard ultra on nearly 2,000 acres in Clancy, Montana where runners repeat a 4.2 mile loop each hour until only one remains. The final solo loop wins a $10,000 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.