Trail Running calendar near Downtown Seattle 2026-2027

We have found 117 Trailruns within 80 miles of Downtown Seattle. See below where and when you can find the races.

A trail race on August 8, 2026, starting at Fairhaven Park and running into Larrabee State Park. Routes showcase forest, lakes, and narrow ridgelines with options of 12K, 25K and 50K and significant elevation gain.

A community trail running event at Cougar Mountain Regional Wildland Park offering 5k, 14.5 mile and 26.2 mile courses through forested, varied single-track; part of a multi-race series with youth scoring and aid stations along each course.

A multi-distance road and trail race in Coupeville on Whidbey Island, running through Ebey's Landing National Historic Preserve with ocean, prairie and mountain views, plus a virtual option.

A mostly downhill rail-trail marathon and half marathon through the Snoqualmie Tunnel and mountain scenery. Both races will be USATF certified and the marathon will be a Boston qualifier; packed gravel surface and shuttle service are provid..

Test your endurance at Lincoln Park by completing as many two mile loops as possible within your chosen time window. This inclusive event features adult timed trials up to 18 hours alongside dedicated kids races.

A two day trail race festival in the Olympic National Forest on August 15 and 16, 2026 offering 10K, 25K, 50K and 100K runs plus ruck divisions, marked courses, stocked aid stations and on site camping.

Evening 5k, 10k and half marathon loops on the paved Chambers Bay trail in University Place, WA, with aid stations, day of packet pick-up, parking at Central Meadows or North Driving Range, and custom finisher medals.

A team relay at Crystal Mountain on August 21-22, 2026 featuring three alpine trail loops, a mid-race gondola ride, and views of Mt. Rainier. Multiple team formats are offered, plus on-site camping and glamping at Ragnar Village.

A remote point-to-point trail event on Kachess Ridge in the Cascades, offering 50K and 50-mile options, alpine ridgeline views, a summit lookout, remote aid stations, and camping at the Salmon La Sac SnoPark finish.

September 2026

The Dark Divide Trail Races offer technical distance options through the Gifford-Pinchot National Forest in Washington. Runners navigate alpine ridges and old-growth forests with views of glaciated volcanoes and on-site camping.

A multi-day ultrarunning festival at a private farm near Bonney Lake, WA, built around a looped 3.1 mile course with a single central aid station and free camping. Events range from 6 hours to a 200 mile race with centralized crew access.

Trail running event near Victoria, BC offering 28 km, 50 km and 50 mile courses with major elevation and coastal mountain terrain. Starts at Goldstream Provincial Park with notable climbs and waterfall views.

Point to point trail race on the Olympic Adventure Trail finishing at Lake Crescent. Offers half marathon, marathon and 50K distances with mandatory shuttles, cupless aid stations, and a lakeside finish at Log Cabin Resort.

A point to point marathon and half marathon on the Palouse to Cascades Trail in North Bend, WA, featuring downhill profiles, a Snoqualmie Tunnel section, lake views, USATF certification and timed race services.

Beat The Blerch in Carnation, WA offers 5K, 10K, half and full marathon distances on a flat out and back gravel trail through mossy evergreen forest, with stocked aid stations including Nutella sandwiches and birthday cake.

Coal Miner is a rugged, self-supported 51.3-mile trail run through the mountains near Roslyn, WA. With no course markings and minimal aid, it demands strong navigation skills and mountain readiness. Finishers must provide summit selfies and..

Test your endurance at McCormick 24 in Gig Harbor. Featuring a 2 mile loop with 320 feet of climb per lap, runners can choose between 12 and 24 hour options with special awards for century finishers.

Fourth annual 5K at Illahee Preserve in Bremerton held during National Recovery Month. Proceeds support the Salish Recovery Coalition and participants receive event swag, a custom finisher medallion, coffee and donuts.

A marathon and half marathon on September 13, 2026 at Hyak Snoqualmie Pass featuring a packed gravel course with about 1,000 feet of net downhill and a run through the Snoqualmie Tunnel; the marathon is a USATF certified Boston Qualifier.

A Spartan obstacle race weekend near Monroe, Washington, set on wooded trails between Puget Sound and the Cascades. Events include Sprint 5 km 20 obstacles, Super 10 km 25 obstacles, Beast 21 km 30 obstacles, kids races, workshops and a 4 h..

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