Jasper Mountain Trail Fest Marathon
Jasper Mountain Trail Fest gives Dayton a rugged full trail marathon, with two loops through Jasper Mountain Reserve and more than 5,000 feet of gain.
Quick facts
- 26.2 miles with more than 5,000 feet of elevation gain.
- Two passes combining the reserve's red, green, and black loops.
- Staged inside Jasper Mountain Reserve near Dayton as part of a conservation-focused weekend.
- Late June starts cool and turns warm, so climbing and descent management beat pace math.
About the Jasper Mountain Trail Fest Marathon
Jasper Mountain Trail Fest includes a solo full marathon inside a conservation-focused trail weekend at Jasper Mountain Reserve. It is a small, rugged alternative to road racing in southeast Washington.
Course
The full marathon runs two passes of the reserve's trail system, combining the red, green, and black loops for 26.2 miles with more than 5,000 feet of elevation gain.
Race-day weather
Late June near Dayton can bring warm afternoon conditions after a cooler start. Trail exposure, climbing, and descent management matter more than road-marathon pace targets.
Past Jasper Mountain Trail Fest Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Saturday, June 19, 2027 | Upcoming | — |
| 2026 | Saturday, June 20, 2026 | Completed | Open results |
| 2025 | Saturday, June 21, 2025 | Completed | Open results |
| 2024 | Saturday, July 6, 2024 | Completed | Open results |
Ran this race?
Share your race experience
Your firsthand experience can help future runners understand the course, logistics, and race-day atmosphere. A short report takes about two minutes.
Jasper Mountain Trail Fest Marathon FAQ
When is the Jasper Mountain Trail Fest Marathon?
The 2027 Jasper Mountain Trail Fest Marathon is on Saturday, June 19, 2027.
Featured collections
Found an official update?Send race details or links
Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.