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Bitterroot Runoff Trail Run

Lolo, United States • 18 Apr 2026

Bitterroot Runoff Trail Runs

The Bitterroot Runoff Trail Runs take place on the private Rossignol Ranch located just west of Lolo, Montana. This event features three distinct distances held on a mix of singletrack and doubletrack trails through open ponderosa pine forests.

Participants can choose from the following distances:

  • 10 Mile: Includes 2,025 feet of climbing, reaching the course highpoint on "The Viking" trail.
  • 5 Mile: Includes 1,000 feet of climbing, descending through the "Owl Alley" singletrack section.
  • 5k: Includes 500 feet of climbing, with most elevation gain occurring within the first mile.

The 10 Mile and 5 Mile courses include aid stations providing water, gels, electrolyte drinks, and snacks. The 10 Mile runners pass an aid station twice, while the 5 Mile runners access one at the two-mile mark. No aid station is provided for the 5k course.

The event includes a post-race trail festival in the finishing meadow. Participants receive a race shirt, a finisher's award, and a homemade brunch featuring pancakes, sausage, and fruit, with vegetarian and gluten-free options available. The festival area also hosts vendors, shoe demonstrations, a raffle, and professional massage services. Visit the organization's website for the most recent information.

United States Montana Lolo

Race information

Website Registration
10 mi
Bitterroot Runoff 10 Mile
5 mi
Bitterroot Runoff 5 Mile
5 km
Bitterroot Runoff 5k
Visit the organization's website for the most recent information.
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