Trail Running Calendar Washington 2026-2027

Trail out and back on the Sammamish River Trail from Bothell Landing offering a half marathon, a full marathon and a 50K. Water and snacks are available and finishers receive a wooden medal.

A trail run or walk near Mossyrock Park offering a choice of a 5K or an 8K Hill Challenge that crosses Mossyrock Dam and features Riffe Lake views, mixed terrain, stroller-friendly sections, and age-based entry fees.

Trail trail race around Soaring Eagle Park in Sammamish on July 4, 2026 with distances from 5 to 25 miles plus a virtual 25 mile option. Aid stations every 2.5 miles, commemorative shirts and medals, food and a chance to win baseball ticket..

A trail race through Yacolt Burn State Forest on July 5, 2026, offering a 50-mile, 50K, and marathon course with rugged terrain, aid stations, camping, a post-race meal, and a bell-ringing finish tradition.

A forested loop at Seward Park on a Lake Washington peninsula offering 4.2 mile and 10k trail options, on-course aid stations, and park-side parking near the start. Part of the Tuesday Night Trail to Grill Series.

Devil's Gulch is a trail race at Mission Ridge Ski Area on July 11-12, 2026 offering a half marathon, 50 mile, and 100 mile distances. Routes run through Ponderosa pine forest with steep technical single track, large elevation gain, and sta..

Grey Rock Trail Runs on July 11, 2026 near Yakima, WA offers 25K and 12K out and back single-track courses with mountain views, aid stations, and medals for the top three men and women.

OUTLAST Spokane is a six hour trail challenge where runners complete a 5K each hour and must finish each lap to continue. Partial finishes earn patches, six laps earn a medal, and top finishers advance on a national leaderboard with cash pr..

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.

Mud Mountain Trail Fest is a trail running event at Mud Mountain Dam in Enumclaw, Washington on July 11, 2026. It offers a 4 Miler and a 10K on forested trails described as moderately challenging.

An all-ages glow run through the Snoqualmie Tunnel on the Palouse to Cascades trail with LED lighting, two participant waves, onsite merch options, and a post-race outdoor block party with food, games and drinks.

Monthly trail races at Cougar Mountain offer a range of distances across a summer series and an October autumn event. The events raise funds for King County Parks and include USATF championship and youth races in August.

A trail running fundraiser for Okanogan Highlands Alliance at Lost Lake Group Camp in Tonasket, WA with multiple distances, camping options, post-race meal and a 1k kids fun run.

A 5K trail run and walk on Tiger Mountain with an out and back route over unpaved roads and a short cross country section. The event is clothing optional and is sponsored by Tiger Mountain Family Nudist Park.

A mountain race weekend at Crystal Mountain on July 17-18, 2026 featuring a half marathon, downhill 10K and a 5K hill climb. Registration includes an all-day gondola pass and courses run on dirt trails through meadows and forest.

A 100 mile endurance race through Washingtons Cascade Mountains centered in Easton, with forested and rugged trails and a long-standing volunteer and radio operator community. Finishers under 32 hours may qualify for a Western States lotter..

An endurance event in Spokane featuring 13 hour, 6 hour, 2 hour run, and 2 hour ruck formats on a 4.5 mile out-and-back loop with on-course aid, lap tracking, and awards for multiple completed laps.

An obstacle course at Lacamas Lake Regional Park featuring a 4+ mile natural-terrain course with 10+ obstacles, a kids loop for ages 4–10, and a festival area with local vendors and BBQ.

A roughly 3 mile obstacle trail run at Joint Base Lewis-McChord on July 18, 2026, with timed wave starts, race packets including shirt and medal, and a post-race beverage and music.

A trail run at St. Edward State Park on July 21, 2026 offering 4 mile and 8 mile loop options on mixed single track and wider trails. The event is part of a summer series and includes an aid station, post run food, and awards.