Vashon Island Ultramarathon & Trail Run

Event details

The Vashon Island Ultramarathon & Trail Run takes place on Saturday, June 6, 2026 on Vashon Island, Washington. The event is run by a volunteer, non-profit organization and is USATF sanctioned and ATRA standards compliant. Entry is limited to 200 participants. The event includes team competitions in three categories - Female, Male, and Mixed - where three team members add their finish times and a Team Captain reports combined times at the finish. The event is also a Youth Certified Trail Race; runners 18 and younger have discounted registration and two scholarships are available to qualified applicants.

• 50K
• 20 Miler
• 10 Miler

Course and logistics

All races start and finish at the Gateway Trail system near SW 178th and 103rd SW. The course uses single track and double track park trails, dirt roads, gravel driveways, grass shoulders, and short paved sections. Elevation change is about 770 feet per loop, and the course contains short steep hills and sections with roots, downed logs, and quick turns. The route is not closed to the public and may encounter equestrians, pedestrians, and bicyclists. Porta-potties are located at 0, 0.5, 1.4, and 6 miles. Aid stations are at miles 6 and 10; 50K runners pass each aid station three times. Aid station supplies include water, soft drinks, electrolytes, salt, fruit, sandwiches, gels, stroop waffles, and other snacks. Camping on Friday night is available in the start/finish field with porta-potties and water in jugs. Live tracking is provided through UltraSignup. Proceeds support island youth athletics. Visit the organization's website for the most recent information.