Trail Running calendar near Seattle 2025-2026

The Mad Meadows 50 is a challenging trail running event held near Leavenworth, Washington, featuring two distances: a 50-mile and a 50-kilometer race. Set in the scenic Eastern Cascades during October's vibrant Larch Season, the course offers a mix of smooth single track, steep climbs, technical sec..

The Orca Recovery Day 5K Trail Run is an annual event held at Clark's Creek Park South in Puyallup, Washington. This trail run/walk covers a 5-kilometer course that is mild to moderately challenging, offering participants a chance to enjoy nature while learning about orca conservation and salmon res..

The Golden 6 Hour is a scenic endurance running event held in Cle Elum, Washington, featuring a 2.45-mile single-track loop on the Swauk Forest Discovery Trail near Blewett Pass. Set amidst vibrant fall colors and turning larches, the course offers mountain views and a festive atmosphere. Participan..

The North Bend Skyline 30K is a challenging trail running event held in the scenic Snoqualmie Valley, Washington. Part of the Vert Running Series Championship, it features a demanding course that tests runners' limits while offering stunning views of the valley and Cascade Mountains. The event takes..

The Cougar Mountain Trail Run is an annual trail running event held at King County’s Cougar Mountain Regional Wildland Park in Newcastle, Washington, just 15 minutes from Seattle. The race offers multiple distances including 5k, 7.6 miles, 19.5 miles, and 50 kilometers, catering to a range of trail..

The West Seattle Monster Dash is an annual running event that features a 5K run/walk, a Kids Monster Dash, and an option to register for a t-shirt only. This family-friendly event encourages participants to dress in costumes and includes a Kids Zone with games and activities. The race takes place at..

The Carkeek 12-Hour is a challenging trail running event held annually at Carkeek Park in Seattle, Washington. Celebrating its 19th edition in 2025, the race offers both 12-hour and 6-hour options on a 1.93-mile loop course featuring 436 feet of elevation gain per lap, including rolling trails and s..

Salt Creek 24 is a unique 24-hour running event held at Salt Creek Recreation Area in Port Angeles, Washington, offering stunning views of the Strait of Juan de Fuca, lush evergreens, and historic World War II sites. Participants can choose from three options: a solo or relay 24-hour race on a 1.3-m..

The Hyak Halloween 25K is a trail running event held at Snoqualmie Pass, Washington, on the ancestral lands of the Snoqualmie Tribe. The 25-kilometer course features a unique and spooky highlight: runners pass twice through the 2.25-mile-long, 110-year-old Snoqualmie Tunnel, known for its eerie atmo..

The Grand Ridge Trail Run, held at Grand Ridge Regional Park in Issaquah, Washington, is the final race of the Evergreen Trail Runs season. It offers multiple distance options including 5-mile, half-marathon, full marathon, and 50K, catering to a wide range of runners. The course features two distin..

The Harriers Gunner Shaw Cross Country Classic is an annual 10-kilometre cross country race held at Thetis Lake Park in Victoria, British Columbia. Known for its challenging course, the race features rugged trails with roots, rocks, stumps, puddles, and six significant hills, including famously name..

The Pigtails Run, known as the "Flat" Fat Ass, is a celebrated annual running event held in Maple Valley, Washington. Marking its 20th year in 2025, the race offers multiple distances including a 50K, marathon, and half marathon. The course features a scenic route along the river and through wooded..

Saturnalia is a winter trail running event held at Squaxin Park in Olympia, Washington. Featuring a 10K distance, it offers participants a festive holiday atmosphere amid the challenges of winter trails, darkness, and variable weather conditions. The event is designed as a fun celebration, inviting..

The Deception Pass 50K and 25K races take place at Deception Pass State Park in Oak Harbor, Washington, known for its rugged coastline, steep cliffs, dense forests, and stunning views. The courses traverse nearly the entire park, including two crossings of the historic Deception Pass Bridge, which i..

The Little Backyard Adventure (LBA) is a trail running event held at L.B.A. Park in Olympia, Washington. Featuring 3, 6, and 12-hour endurance runs, the race challenges participants to complete as many ~4-mile loops as possible on a twisting, technical single-track course through the lush, forested..

Leavenworth Trail Fest, held in Leavenworth, Washington, offers a scenic mountain running experience featuring multiple race distances: the challenging Ski Hill 55k ultra, the fast Leavenworth Skyline 27k, and a family-friendly Town 5k. The 27k course ascends 3,800 feet, showcasing stunning views of..