Trail Running calendar near West Seattle 2025-2026

We have found 52 Trailruns within 80 miles of West Seattle. See below where and when you can find the races.

Test yourself on the Tiger Peak Challenge, a trail run on Tiger Mountain with 5 mile, half marathon and 50K routes that reach two scenic summits. Expect rugged trails, big views, aid stations and a handmade solar finisher prize.

July 2026

Run Mount Rainier trails July 17 and 18 2026 at Crystal Mountain Resort, from summit starts and steep climbs to fast descents across 5K to half marathon distances. Registration includes a daylong scenic gondola pass.

Cascade Crest is a rugged 100 mile trail ultra near Easton Washington that climbs over 23,000 feet and includes about 32 miles on the Pacific Crest Trail. Expect deep forests, the 2.3 mile Snoqualmie Tunnel, and a relentlessly scenic mounta..

August 2026

One Step Closer invites runners to Lincoln Park in Seattle to tackle a scenic 2 mile loop as many times as they can in 3, 6, 12 or 18 hours. All participants finish together with a lively celebration and plenty of camaraderie.

September 2026

Run the rugged trails of the Dark Divide in Washington's central Cascades at the scenic Cispus Learning Center September 4-6, 2026. Choose from a 100 mile, 50K or 15 mile course across steep, technical singletrack.

Tackle the Kusam Klimb in Sayward BC on June 20, 2026, a scenic trail run up Bill's Trail to Mt H'Kusam with rewarding summit views. Choose the full Klimb or Mini Klimb and enjoy mossy singletrack and technical mountain trails.

Run the Cascade Express Marathon or Half Marathon along the scenic Palouse to Cascades trail with sweeping Cascade Mountain views and a 2.4 mile tunnel on the half. The marathon is a Boston qualifier and both courses are USATF certified.

Run the GOAT Run in Port Angeles on the Olympic Adventure Trail with 50K, marathon or half options, ending at Lake Crescent. Scenic single track, shuttle to the start and a lively after party make for a memorable day.

Team trail relay across Orcas Island's Moran State Park covering 70 miles over two days and 12 legs. Teams of two to six share scenic climbs to Mount Constitution, lakeshores and forests for a memorable weekend of teamwork and adventure.

Cirque Series at Crystal Mountain on Sept 19, 2026 offers a scenic, challenging 7.7 miles with 2,544 feet of climb and summit ridgeline views. Limited to 700 runners, this technical mountain course promises epic panoramas.

Explore coastal trails around Anacortes with ocean views and the iconic Deception Pass Bridge on loop and out and back courses. Marathon, half marathon, 5 Mile and kids race options welcome runners of all paces in a sustainably run event.

October 2026

North Bend Trail Fest brings mountain running and outdoor demos to North Bend, Washington on October 2 to 4, 2026. Run the Skyline 30k with huge vertical gain, enjoy shorter races and an expo, and support Recovery Beyond.