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.

A 100 mile point to point mountain ultramarathon in the Crazy Mountain Range with about 23,000 ft of vertical gain. The route crosses private ranches, public forest, and Apsaalooke lands and features long technical sections.

The Judith Mountain 10K will take place in Lewistown on Saturday 1 August 2026. You can run between 6 and 10 kilometers.

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..