Trail Running Calendar Washington 2025-2026

River Ridge Ultra takes place in Spokane, WA, offering a 30-mile loop and two 9-mile options (run and run/ruck). The dirt/road trail course runs from Bowl and Pitcher through Riverside State Park, with aid stations at landmark trailheads and Doomsday Hill. The event emphasizes a Phase One Mission of..

Wild Moose Chase is a Spokane, Washington running event offering 5K, 10K, 25K, Kids Fun Run, and a Wild Moose Chase Virtual Run. Runners traverse a scenic Riverside State Park course, starting and finishing near the Seven Mile Trailhead. Distances cater to all levels, from a 5K to a 25K, appealing t..

The West Seattle Monster Dash is an annual costumed 5K trail run/walk held at Lincoln Park in Seattle, WA. The 14th edition takes place in October 2025 and features a 5K Run/Walk, a Kids Monster Dash for children 12 and under, and a "Just a Shirt!" option. Participants receive a t-shirt with the ico..

Cougar Mountain Trail Run Series, held near Seattle in King County’s Cougar Mountain Regional Wildland Park in Newcastle, WA, offers four distances: 5K, 7.6 miles, 19.5 miles, and 50K. The course features rolling hills through a lush forest, fern-lined single-track, and marshy sections, with a mix o..

Scarin' Up Some Fun 5k Glow Run/Walk is held in Sedro-Woolley, Washington at the Northern State Recreation Area. The event features a 5-kilometer trail route winding through trails, barns and surrounding buildings. It creates a spooky, glow-themed evening atmosphere, with participants encouraged to..

ScaryAss 25K/14K/4K is a low-key trail race in Olympia, Washington, starting and finishing at Fall Creek Day Use Area in Capitol Forest. Organizers offer three distances: a grueling 25K to Capitol Peak and back, a scenic 14K loop, and a family-friendly 4K along mountain-bike trails. The 25K features..

Chamna Chase takes place in Richland, Washington at the Chamna Natural Preserve. The event offers three distances: a half marathon, 10K, and 6K. The course features dirt trails with occasional rocks, a double out-and-back for the half with a middle loop, and the 10K following the initial out-and-bac..

Hyak Halloween 25K, a Rainshadow Running event, takes place on Snoqualmie Tribe Ancestral Lands at the Hyak Trailhead along the Palouse to Cascades Trail near Snoqualmie Pass, Washington. The 25K course features about 1,800 feet of cumulative elevation gain and a similar descent, with roughly half t..

Salt Creek 24 is an all-day, all-night endurance event held at Salt Creek Recreation Area in Port Angeles, Washington. It offers three options: a 24-hour race around a 1.3-mile loop, a Relay Team format, and a Last Runner Standing challenge that summits Striped Peak (~3.75 miles with about 1,000 ft..

Endless Trails’ Carkeek 12-Hour returns for its 19th edition at Carkeek Park in Seattle, Washington, offering in-person and virtual options. Runners choose between a 12-hour or 6-hour race, looping a 1.93-mile course with about 436 feet of elevation gain per lap, featuring rolling trails, stairs, an..

The Willapa Trail Festival is a multi-distance trail running event held in Chehalis, Washington, with races from 5K to 100 miles. Runners start and finish at Owl and Olive Cafe, using the flat, fast Willapa Hills State Park Trail along the Chehalis River. Distances offered: 5K, 25K, 50K, 50M, 100M...

Pomeroy SoleKids Fall Frenzy 5k is held in Pomeroy, Washington. The 5K starts and finishes at the Pomeroy Community Garden (intersection of 3rd Street and Pataha Street). The race features a flat, fast loop that winds through town amid fall colors and cooler temperatures, making it accessible for fi..

Grand Ridge Trail Run, held at Grand Ridge Park near Issaquah, Washington, is the season finale of Evergreen Trail Runs. The event offers multiple distances: 5 Mile, Half Marathon, Marathon, 50K, 5M Brunch Run, and a Kid's Race. The course uses two distinct loops: a 5-mile loop and a Half-Marathon l..

Ravenna Refresher Trail Run, held at Ravenna Park in Seattle, WA, is the second event in Northwest Trail Runs’ Winter Trail Series. Runners can choose from 4k, 8k, or 12k distances, all on the same 4.1 km loop with about 230 feet of elevation per loop. The course winds through groomed forest trails..

Celebrate Veterans 5K in Tacoma, Washington, is a 5K run held at 4256 84th St E, Tacoma WA 98446. The course is a simple out and back on the new Orange Gate/Pipe Trail, and this is the trail's first official event. The atmosphere honors veterans and features patriotic touches, including a patriotic..

The Ruff in Carson, WA, is a 7-mile trail race starting and finishing at the Dog Mountain Trailhead in the Columbia River Gorge National Scenic Area. The course runs entirely on single-track trails: a 3-mile ascent with about 3,000 feet of elevation gain to the summit, followed by a 4-mile downhill..

The Climb 89 will take place in Richland on Friday 5 December 2025.

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 celebrates the season with a fun and spirit..

2025 Pigtails Run in Maple Valley, Washington marks its 20th year with the event’s Fat Ass vibe. It offers 50K, marathon, and half-marathon distances, starting and finishing at Four Corners in Maple Valley. The course mostly uses paved river trails, with some dirt and gravel, using out-and-back sect..

Deception Pass 50K/25K, hosted by Rainshadow Running, is staged at Deception Pass State Park near Oak Harbor, WA. The event offers a 50K (≈4,300 ft gain/loss) and a 25K (≈3,000 ft), both starting at the West Point Amphitheater. Runners traverse paved park roads and rugged single-track trails through..