Trail Running calendar near Arlington 2026-2027

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.

The Yeti Ultra Trail Washington takes place on the Palouse to Cascades Trail near Hyak. Runners can choose between 200K, 100-mile, and 100K distances on a crushed limestone course featuring a long tunnel. The event emphasizes a supportive c..

Tiger Peak Challenge The Tiger Peak Challenge is a trail running event on Tiger Mountain, located near Issaquah, Washington. The event offers three distances: a 5-mile, a half marathon, and a 50K race. The courses involve running on trails..

A day of road trail racing on the Sammamish River Trail offering a half marathon, marathon and 50K out and back from Bothell Landing Park. The route passes Wilmot Gateway Park and turns at Dr Call's Bench.

Run through an old growth forest on the Lake Washington peninsula at Seward Park. This Tuesday evening event features technical trail loops, a post race grill, and distances of 4.2 miles and 10 km.

Experience the lush single track trails of Bellevue at this cup free event featuring 5K, 10.8 mile, and 19.5 mile distances while supporting the maintenance of King County Parks.

Experience the lush forests and rolling hills of Cougar Mountain Regional Wildland Park at this trail event near Seattle. Choose between 5k, 10.8 mile, and 19.5 mile distances on varied terrain ranging from technical to groomed trails.

Run through the forests and meadows of Crystal Mountain with views of Mount Rainier. This July 2026 trail event features downhill half marathon and 10K courses, plus a steep 5K hill climb. The weekend includes a race expo, gondola access, a..

Experience the lush forests and historic grounds of St. Edward State Park at this summer trail run. Choose between a 4 or 8 mile loop followed by a social grill out with hot dogs and watermelon.

Dirt Circus Seattle is a free community festival celebrating the local trail running scene. It features a social group run, followed by food, an expo, and a raffle with prizes. The event is held at Seven Hills Running Shop, connecting runne..

Experience mountain racing on the Olympic Peninsula at the Beast of Big Creek. Summit Mt. Ellinor in the 22K Skyrace or explore lush rain forests on the 8K Forest Loop in Hoodsport, Washington.

This trail run in Larrabee State Park features distances from a 12K to a 50K, all starting at Fairhaven Park. The course winds through lush forests and along scenic ridgelines with views of Mount Baker. Finishers earn a unique, handcrafted..

Experience the lush single track trails of Bellevue in this cup free trail series featuring distances of 5K, 14.5 miles, and a full marathon. Support King County Parks while running through beautiful forest and wetland habitats.

A marathon and half marathon near Hyak at Snoqualmie Pass on August 9, 2026. The 2026 route uses an alternate permitted course with about 1,000 feet of net downhill on packed gravel and the marathon is a USATF-certified Boston qualifier.

Tackle the rugged single track trails of Cobble Hill in this eighth edition trail run. Choose between a 25 km long course or a 12 km short course, both with significant elevation. The event also fundraises for local nature trails.

Set in Washington's Olympic National Forest, this August weekend offers trail races from a 10K to a 100K, including ruck divisions. Courses feature significant elevation on scenic single-track trails. Registration opens in January with disc..

Experience an evening run at Chambers Bay with stunning views of Puget Sound. Choose between 5k, 10k, or half marathon distances on a scenic paved loop featuring rolling hills and sunset vistas.

The Cutthroat Classic is an 11 mile trail run on the Pacific Crest Trail through the North Cascades. It features a wave start, mountain views, and is a cupless event. Proceeds support local trail maintenance.