Trail Running calendar near Lewistown 2026-2027

Join the Weir Warrior Memorial Ruck in Neihart, Montana on June 20, 2026 for timed ruck and hike options that test endurance and honor a lasting legacy. Enjoy post event food and drinks while supporting scholarships for Montana students.

The Crazy Mountain 100 is a rugged point-to-point ultramarathon through Montana's Crazy Mountains. With 23,000 feet of climb and remote, technical terrain, it's a qualifier for Hardrock and Western States. The event starts in Wilsall and fi..

A scenic 10K trail run and 6K hike in Montana's Judith Mountains. The looped running course features 1,280 feet of elevation gain on single-track trails. After the event, participants can enjoy the nearby Centerfest Music Festival in Lewist..

On August 8, 2026 trail races in Mission Canyon include a 10 Mile, a 20 Mile mountain loop with mixed surfaces, and a new 50K that has an 8.5 hour cutoff.

The Aidspirit USA Marathon features a fast, scenic route from the mountains to historic Harlowton on compacted gravel. All proceeds support children's care and education in Uganda, and finishers enjoy a local craft beer. Distances range fro..