Trail Running calendar near Big Sky 2025-2026

The Copper Kings 100 is a challenging 100-mile ultramarathon held in Butte, Montana, starting and finishing at the historic Belmont Mine. The single-loop course features 63 miles along the scenic Continental Divide Trail, with elevations ranging from 5,650 to 8,400 feet and a total vertical gain and..

The Yellowstone Trail Race, held near West Yellowstone, Montana, offers a scenic trail running experience just outside Yellowstone National Park. Participants can choose from 50K, 25K, and 10K distances, all starting and finishing at the Rendezvous Ski Trails within the Custer Gallatin National Fore..

The Bangtail Divide 38k is a trail running event held in Bozeman, Montana. The race covers a distance of 38 kilometers along the Bangtail Divide Trail (Trail number 504), starting at Stone Creek and finishing at Brackett Creek. Registration is limited to 150 participants on a first-come, first-serve..

The Devil's Backbone 50 Mile & Relay is a challenging ultramarathon held in the remote Gallatin National Forest near Bozeman, Montana. The race features a single 50-mile course with over 10,000 feet of elevation gain, traversing high mountain ridges and valleys with technical single-track trails, st..

The Jim Bridger Trail Run & Roller Ski Races take place in Bozeman, Montana, featuring a 5K and a challenging 10-mile trail run with 2,838 feet of elevation gain. The 10-mile course offers scenic views, including climbs through Middle Cottonwood and Sypes Canyon, crossing private land accessible onl..

The Yellowstone Trail Race, held near West Yellowstone, Montana, offers a scenic trail running experience just outside Yellowstone National Park. Participants can choose from three distances: 50K, 25K, and 10K, all starting and finishing at the Rendezvous Ski Trails within the Custer Gallatin Nation..

The Prospector's 50k | 30k is a trail running event held in Cooke City, Montana, typically in early August. Named after the rugged prospectors of the 1860s, the race offers two distances: a 50-kilometer and a 30-kilometer course. Participants experience stunning mountain views and pass historic mini..

The Copper City 24 Hour Race, held in Three Forks, Montana, is an endurance running event featuring 12- and 24-hour options. Participants run on a scenic, relatively flat one-mile double-track loop that offers views of multiple mountain ranges, the city lights of Three Forks at night, and passes thr..

The Harriman 25K/50K Trail Run, held annually at Harriman State Park near Island Park, Idaho, offers a scenic and well-curated trail running experience. The event features three distances: an 8.1-mile race, a 25K, and a 50K (two laps of the 25K course). Runners enjoy beautiful single-track trails th..

The Big Bear Stampede is a trail running event held at Eagle Creek Campground in Gardiner, Montana, near Yellowstone National Park. Scheduled for September 6, 2025, it features 5k and 9k trail races with scenic views of Electric Peak and other Yellowstone peaks. The 9k course includes 1,000 feet of..

The Rut Mountain Runs is a three-day mountain running event held at Big Sky Resort in Montana, scheduled for September 12-14, 2025. It features a variety of race distances including a 50K, 28K, 21K, 11K, and the Lone Peak Vertical Kilometer, as well as a Kids 1K Runt Run. A special Trifecta challeng..

The John Colter Run is a rugged 7.5-mile trail race held at Missouri Headwaters State Park near Three Forks, Montana. The course starts with 1.5 miles on paved/gravel roads, followed by 5.5 miles of challenging trails reminiscent of the historic Lewis and Clark expedition era. Unique features includ..

The Montana Meltdown is a fixed-time endurance running event held at Gallatin Valley Regional Park in Bozeman, Montana. Participants can choose from 24-hour, 12-hour, or 4-hour races, running on a scenic 1.5-mile loop course. The event offers a supportive atmosphere where runners can test their spee..

The Bobcat Trail Challenge at Crosscut is a trail running event held at the Crosscut Mountain Sports Center in Bozeman, Montana. The race features a challenging 5km cross-country ski loop course, with options to compete in 5k, 10k, or 20k distances. Participants can also join as part of a 2 or 4-per..

The Montana Cup is a team-based cross-country running event held at Gallatin County Regional Park in Bozeman, Montana. It unites runners from across Montana’s regions to compete for a traveling trophy. The race features separate categories for men and women, divided by age groups (under and over 40)..

The Pronghorn Pursuit Trail Run, held annually near Dillon, Montana, offers a scenic and challenging off-pavement experience through the sagebrush hills of the High Trails System. Participants can choose from a 15K trail run featuring 90% single-track with 2,400 feet of climbing, a 5K trail run with..