Corn Maze Craze

Beat The Blerch Seattle (Carnation, WA) offers four distances: 5K, 10K, half marathon, and full marathon. The race begins and finishes at King County’s Tolt MacDonald Park in Carnation, a quaint town about 35 minutes from Seattle. The course is a flat, out-and-back gravel trail through evergreen and..

The Return of the Salmon Celebration - Salmon Run is held at Osprey Park in Sultan, Washington, celebrating the cultural heritage of the Skykomish River Valley and honoring Chief T'seul-Ted. The event features a scenic 5K trail run through the beautiful forest trails of Osprey Park and Susie's Trail..

Run With The Kokanee is a fall running event held at Lake Sammamish State Park in Issaquah, Washington. It features flat and fast 5k and 10k distances, with the 10k consisting of two loops of the 5k course. The route is about two-thirds paved sidewalks and paths, and one-third dirt or grassy trails,..

The West Seattle Monster Dash is an annual costumed 5K trail run/walk held at Lincoln Park in Seattle, WA. The 14th edition takes place in October 2025 and features a 5K Run/Walk, a Kids Monster Dash for children 12 and under, and a "Just a Shirt!" option. Participants receive a t-shirt with the ico..

Endless Trails’ Carkeek 12-Hour returns for its 19th edition at Carkeek Park in Seattle, Washington, offering in-person and virtual options. Runners choose between a 12-hour or 6-hour race, looping a 1.93-mile course with about 436 feet of elevation gain per lap, featuring rolling trails, stairs, an..

Cougar Mountain Trail Run Series, held near Seattle in King County’s Cougar Mountain Regional Wildland Park in Newcastle, WA, offers four distances: 5K, 7.6 miles, 19.5 miles, and 50K. The course features rolling hills through a lush forest, fern-lined single-track, and marshy sections, with a mix o..