Jasper Mountain Trail Fest
Dayton, United States • 19 Jun 2027
Jasper Mountain Trail Fest 2027
Jasper Mountain Trail Fest takes place at Jasper Mountain Reserve near Dayton, Washington. The event uses the reserve's single track trails and organized loop system. Three named loops combine to exactly 13.1 miles: Red Loop, Green Loop, and Black Loop.
- 52.4 miles 4 person relay
- 13.1 miles Half marathon
- 26.2 miles Full marathon
- About 4.4 miles Family run on the Green Loop
The relay is a four person team event that uses one assigned bib on an adjustable belt exchanged between teammates. Teams are formed from individually registered participants; timing provides team results and individual split times. The relay format cycles runners through the Red, Green, and Black loops until each team member completes all three loops, for a total of twelve loops.
The half marathon covers 13.1 miles with 2,570 feet of elevation gain. The full marathon covers 26.2 miles with 5,140 feet of elevation gain and follows the combined loop course twice. Aid stations are located at mile 3.3, mile 7.7, mile 10.3 and the finish for the half, with additional stations at mile 16.4, mile 20.8 and mile 23.4 for the full.
Race registration includes camping and parking on the reserve directly on the course. The reserve is off the grid with no water or electricity; participants should plan to bring food, water, and battery power. Portable sanitary facilities are provided. Noise is restricted, dogs must be on leash, campfires are allowed only in one designated area, and all trash must be removed by visitors. Nearby towns with accommodations include Dayton, Waitsburg, and Walla Walla. Visit the organization's website for the most recent information.