Jasper Mountain Trail Fest

Event overview

The Jasper Mountain Trail Fest takes place on June 20, 2026, in Dayton, WA (934 Payne Hollow Road). The event raises funds for Jasper Mountain Reserve, an environmental 501(c)(3) non-profit that works to improve wildlife habitat in the Blue Mountains.

Race options:

• 100 km 5-person relay (teams of five)
• 13.1 miles Half marathon (2,570 feet elevation gain)
• 26.2 miles Full marathon (5,140 feet elevation gain)
• 4.4 miles Family run (approximate distance, minimal elevation gain)

Course and logistics

All events use three single-track loops: Red Loop 3.3 miles, Green Loop 4.4 miles, and Black Loop 5.4 miles. The three loops combined equal 13.1 miles; the full marathon runs the combined loops twice. Relay teams share one bib and rotate through the loops so each team member completes each loop; timing provides team results and individual splits. The relay is expected to take 10-15 hours. Headlamps are mandatory for runners active after 8:00 PM.

Parking and campsites near the start/finish are included in the race fee. Jasper Mountain Reserve is off-grid: no water or electricity on site. Portable sanitary facilities are provided. Dogs must be on leash; loud noises and generators are prohibited. Camp-fires are allowed only at the designated area. Participants must collect and remove their trash. A welcome reception and short presentation are held the evening before the event. Visit the organization's website for the most recent information.