Trail Running calendar near Renton 2026-2027

Traverse the scenic Kelly Ridge on single track trails between Olympic National Park and the Strait of Juan de Fuca. Choose from three distances finishing at the clear waters of Lake Crescent.

Cascade Express Marathon and Half in Snoqualmie Pass, WA features a USATF certified marathon with 1,247 feet of net downhill and a national number 5 Boston Qualifier ranking. The course runs through the Snoqualmie Tunnel corridor.

Experience a flat out and back course through mossy evergreen forests along the Snoqualmie valley trail. Choose from four different distances starting at Tolt MacDonald Park in the town of Carnation.

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..

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.

Tunnel Light Marathon and Half Marathon in Hyak Snoqualmie Pass on September 13 2026 features certified downhill courses on packed gravel, passage through the Snoqualmie Tunnel with headlamps required, and shuttles from the Garcia Trailhead..

Experience an obstacle course championship weekend at Meadow Wood Equestrian Center. Choose from several distances through evergreen trails and narrow paths between the Cascade Mountains and Puget Sound.

Experience a 7.9 mile mountain race at Crystal Mountain featuring a 2614 foot vertical gain. Runners reach a high point of 6861 feet at Grubstake while enjoying views of Mt Rainier and the Cascade Range.

Remote trail ultramarathons near Leavenworth, WA with self support and one resupply after 100K. Proceeds benefit local Search and Rescue and veteran support groups.

Ultra Fest in Easton, Washington offers fast, flat trail races on the Foothills Trail across multiple distances with crew access, on-site parking, stocked aid stations, and race medals or buckles.

A themed 5K on September 19, 2026 at Magnuson Park in Seattle that invites participants to walk or run in costume. The trail route includes mild inclines and mixed surfaces and welcomes leashed dogs and suitable strollers.

A weekend of alpine trail races near Cle Elum Washington on September 19 and 20 2026 offering 100 mile, 50 mile and 50K courses with long climbs, remote aid station gaps, required safety kit and qualifying and trail work requirements.

Trail races on Fidalgo Island near Anacortes include Marathon, Half Marathon, a 5 Mile and a Kids Race. Routes feature ocean views, multiple loops and a crossing of the Deception Pass Bridge on the pedestrian walkway.

A two-day mountain running festival in North Bend, Washington featuring a 30k Skyline championship, a Mt Si vertical kilometer, a Little Si 10k, and a two-day double, plus exhibits, awards, and local community support.

A 25K point to point trail run along the eastern shore of Baker Lake near Concrete, WA, through old-growth forest and areas of Douglas fir regrowth with native wildflowers. Participants are bused to the start from Kulshan Campground.

A high elevation trail event near Leavenworth, WA offering 50M and 50K races on technical single track with steep climbs, ridge views, and extensive larch stands in October.

Trail races near North Bend, WA follow the Middle Fork and CCC trails through old-growth forest and river views. Multiple measured distances from 10k to 50k include aid stations and water crossings.

A multiformat endurance event at Salt Creek Recreation Area with 12 hour and 24 hour loop options, a relay format, and a Last Runner Standing summit challenge offering coastal views and stocked aid stations.

Join this unique Halloween themed relay scramble in Black Diamond. Form a team to track down rogue ghosts and return them to Civic Park in a race that combines running with a scavenger hunt.

Experience the lush forests of the Cascade foothills in this seasonal finale featuring distances from 5 miles to a 50K ultramarathon. Run through golden fall colors and mossy trails in the heart of Grand Ridge Park.