Jasper Mountain Trail Fest

Jasper Mountain Trail Fest 2026

The event is a fundraising event that benefits Jasper Mountain Reserve, an environmental non-profit organization dedicated to improving wildlife habitats for rare and endangered flora and fauna native to the Blue Mountains in southeast Washington.

It takes place on Saturday, June 20, 2026, in Dayton, Washington. The start and finish area is located at Jasper Mountain Reserve on Payne Hollow Road.

The event offers four race options:

• A 4-person relay with a total distance of 52.4 miles.
• A solo half marathon of 13.1 miles with 2,570 feet of elevation gain.
• A solo full marathon of 26.2 miles with 5,140 feet of elevation gain.
• A solo 4.4-mile family run with minimal elevation gain.

All courses use single-track trails within the reserve. The three primary trail loops are the Red Loop (3.3 miles), the Green Loop (4.4 miles), and the Black Loop (5.4 miles). Combined, these three loops equal a half marathon distance. The full marathon course runs this combination twice.

Parking and campsites close to the start/finish line are included in the race fee. The reserve is off-grid, so participants must bring their own food, water, and power sources. Portable sanitary facilities are provided. Visit the organization's website for the most recent information.