Trail Running calendar near Lewistown 2026-2027

We have found 5 Trailruns within 80 miles of Lewistown. See below where and when you can find the races.

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.

July 2026

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..

August 2026

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.

September 2026

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..