Jasper Mountain Trail Fest

Dayton, United States • 20 Jun 2026

Jasper Mountain Trail Fest

Jasper Mountain Trail Fest is a fundraising event that benefits Jasper Mountain Reserve, a 501(c)(3) organization working to improve wildlife habitat for rare and endangered plants and animals in the Blue Mountains in southeast Washington. The event is held at Jasper Mountain Reserve on Payne Hollow Road near Dayton, WA 99328.

Race options cover a range of distances:

  • 4-person relay, total 52.4 miles
  • Solo Half Marathon, 13.1 miles, 2,570 feet elevation gain
  • Solo Full Marathon, 26.2 miles, 5,140 feet elevation gain
  • 7k Family Run, 4.3 miles, minimal elevation gain

The course uses three single track loops: Red Loop (3.3 miles), Green Loop (4.4 miles), and Black Loop (5.4 miles). All three loops combined equal 13.1 miles; the full marathon is two complete circuits of the combined loops. The relay uses a single assigned bib on an adjustable belt that is passed between four team members; teams rotate through the red, green, and black loops until each member has completed all three loops. Race timing records team results and individual splits.

On-site camping is available within the reserve and is located on the race course; parking and campsites close to the start and finish area are included in the race fee. The reserve is off grid with no water or electricity. Portable sanitary facilities are provided. Loud noises and generators are prohibited, dogs must be on leash, campfires are allowed only in a designated area subject to seasonal restrictions, and participants are asked to pack out all trash. Nearby overnight options are available in Dayton, Waitsburg, and Walla Walla. Visit the organization's website for the most recent information.

Race information

52 mi
4-Person Relay
26 mi
Full Marathon
13 mi
Half Marathon
4 mi
7k Family Run
Visit the organization's website for the most recent information.
Trail runs nearby

A women only endurance race at Bennington Lake featuring a 5 mile loop with 370 feet of gain. Complete as many laps as possible in 6 hours while celebrating the trail running community.

A 5K out and back trail race in the Blue Mountains of southeast Washington from Boundary Trailhead to Rose Springs SnoPark. Shuttle service from Pomeroy High School is included and all finishers receive shirts and medals.