West Seattle Beach Run - Fat Ass

West Seattle Beach Run 2026

The West Seattle Beach Run - Fat Ass takes place on Sunday, February 8, 2026, beginning in the Magnolia neighborhood behind the Interbay golf course near the train tracks. The course starts at Thorndyke Ave W. and 20th Ave W. Parking is on local streets.

Distances:

• Half marathon
• Marathon

Course

The route follows 20th Ave W. to the Elliot Bay Trail and continues south along the waterfront through Myrtle Edwards Park and the Sculpture Park onto Alaskan Way. Runners remain on Alaskan Way and the Elliot Bay Trail as it becomes E. Marginal Way, then follows the trail onto the West Seattle Bridge Trail. From there the route turns right onto Harbor Ave. W. and proceeds to South West Seattle and Lincoln Park, with a turnaround just past the Colman Outdoor Pool to return the same way.

Specific turnarounds: marathon runners turn around just past Me-Kwa-Mooks Park at S.W. Jacobson Rd; the half marathon turnaround is at the Duwamish Waterway when the trail becomes the West Seattle Bridge Trail. These turnaround points are not marked. Visit the organization's website for the most recent information.