Trail Running Calendar near Three Forks 2026-2027

August 2026

Road Race Trail Run 5 km 10 km

The Sweet Pea Run in Bozeman offers 5K, 10K and a 5k handcycle race during Sweet Pea Festival weekend. Sponsors and proceeds support local running programs and youth scholarships, and children 12 and under enter free.

Aug

12

We

Brew Run at Bridger Brewing

Bozeman | 28 mi from Three Forks

Road Race Trail Run Walk 5 km

A 5K running race at Bridger Brewing in Bozeman on August 12, 2026, presented by the Bozeman Distance Project 501(c)3. Registration runs July 8 to August 12 with a $10 fee.

Aug

15

Sa

Bridger Ridge Run

Bozeman | 28 mi from Three Forks

Trail Run 20 mi

A remote roughly 20 mile ridge trail race near Bozeman, Montana, run by volunteers with a lottery limited field. The route is technical and exposed; aid stations are volunteer staffed and participants must carry a water vessel.

Aug

29

Sa

The Montana Cattlewomen Ranch Run

Three Forks

Trail Run 5 km 10 km

A ranch-based running event in Harrison, Montana offering a 1K calf run, 5K, 10K, Tough Udder obstacles and a virtual option, with on-course water stations and event swag.

September 2026

Sep

19

Sa

John Colter Run

Three Forks

Trail Run 8 mi

Experience a historic re-enactment through the rugged trails of Missouri Headwaters State Park. This unique 7.5 mile run features deep mud, river crossings, and wild Montana terrain for a limited field of 300 participants.

Sep

26-27

Sa - Su

Montana Meltdown

Bozeman | 28 mi from Three Forks

Backyard Ultra

Timed running events at Gallatin Valley Regional Park in Bozeman offer 4 hour, 12 hour and 24 hour options on a flat 1.5 mile loop with a stocked aid station and free race photos.