Trail Running calendar near West Seattle 2026-2027

A looped ultramarathon at Lake Youngs Watershed near Renton Washington offering distances from 50K to 200 mile. The course gains 900 feet per loop and the longest entries include an initial unsupported segment before joining the 100 mile fi..

Experience a forested trail run through a scenic Seattle ravine with 4k, 8k, and 12k options. Enjoy groomed trails and a post race grill session featuring hot dogs and watermelon at Ravenna Park.

Trail races through the pine filled Teanaway Community Forest near Cle Elum, Washington. Options include 5k, 10k, half marathon and marathon on dirt roads and trails with varied elevation and staffed aid stations.

A trail event on Vashon Island offering 50K, 20 mile and 10 mile courses through Island Center Forest, with staffed aid stations, drop bag access, a team competition and a youth-certified program.

A 50 mile team relay from the foothills of Mount Rainier to Tacoma’s Ruston Way waterfront on June 6, 2026. Teams of 2, 3, 4, or 6 share 12 mostly downhill legs along the Foothills Trail and finish at a waterfront festival with food and mus..

FORGE is a 12-hour backyard ultra in Washington. Runners complete a 4.167-mile loop every hour on the hour, with a total of 50 miles possible. The format tests endurance and pacing on a flat, unshaded course.

Trail races on the east flank of Tiger Mountain near Issaquah, WA, offering 5k, 12.6k and a 13.56-mile Half Marathon on well-marked loop courses with aid stations, parking at a DNR trailhead, and youth discounts.

Loop the 'Lupe! offers a unique mix of obstacle course challenges and family friendly runs in Seattle. Choose from competitive elite waves, a simpler family course, or flat walking events, all supporting local community outreach. Everyone g..

Experience a friendly, low cost marathon or relay along the Green River and Interurban trails ending at Alki Beach. This community event offers distances from a half marathon to a 50K with views of the Puget Sound.

Trail races on Orcas Island offering 50K, 25K, and a Double 75K over varied single track and old growth forest. The start and finish are at Doe Bay Resort with aid stations, drop bags, on site camping options, and required ferry reservation..

Lumberjack 100 is a multi distance ultrarun in Port Gamble, Washington with eight 12.5 mile loops. Options include 100 mile, 100K, and 50 mile distances, with three aid stations per loop and on course drop bag support.

A fast, mostly downhill marathon and half marathon through the Snoqualmie Tunnel on packed gravel. The marathon is a Boston qualifier and both races include aid stations and shuttle service back to Hyak Sno-Park.

A multi-day, beginner-friendly trail festival at St. Edwards State Park focused on inclusion and community, with looped race distances, family activities, on-site refreshments, and a reusable cup program to reduce waste.

A USATF certified net downhill marathon and half marathon through the Snoqualmie Tunnel corridor in Snoqualmie Pass, WA on June 13, 2026. Ranked #22 nationally for Boston qualification, the event includes professional timing and live tracki..

A Last Person Standing trail race in Japanese Gulch near Mukilteo, WA, run on a 2.18 mile forest loop with steadily shrinking time cutoffs until one runner remains. Full aid is provided and part of registration funds trail improvements.

Experience diverse trails and lush forests at Cougar Mountain Regional Wildland Park. Choose from three distances ranging from a 5k to 14.5 miles just minutes from Seattle.

Enjoy a free seven race summer series featuring a 5k trail course in Black Diamond. Run or walk bi weekly races to build community and compete for season end prizes in a supportive environment.

Hotfoot 5K Trail Run in Port Orchard offers a mostly flat 5K and a 1 mile loop through South Kitsap Regional Park, with proceeds supporting a community scholarship and the public Fourth of July fireworks.

Experience the forest trails of Carkeek Park in Seattle with 5k and 10k options featuring rolling hills and post-run festivities. Enjoy a community atmosphere with refreshments and awards in a beautiful wooded setting.

A multi-distance trail event at Hyak on the Palouse to Cascades Trail featuring a new 200K, a 2.3-mile tunnel section, crushed limestone surface, and cut-offs of 30 hours for most races and 35 hours for the 200K.