Trail Running Calendar Washington 2025-2026

Dress up and run or walk the West Seattle Monster Dash, a family friendly costumed 5K and kids dash through scenic Lincoln Park to benefit South Seattle College Cooperative Preschools. Registration includes a new design shirt, kids zone and..

Event details The Chamna Chase is scheduled for Saturday, October 25, 2025, at Chamna Natural Preserve in Richland, WA, near 1200 Carrier Road. Registration closes on October 21, 2025. Distances: 1/2 Marathon 10K 6K Course and event servi..

Event overview The Cougar Mountain Trail Run Series (October) is scheduled for October 25, 2025, at Sky Country Trailhead in Bellevue, Washington, within King County’s Cougar Mountain Regional Wildland Park. The series is organized by Seatt..

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..

Run for trails at Carkeek 12 hour, a scenic loop fundraiser at Carkeek Park in Seattle on October 25 with a virtual option in October. Limited to 50 runners, costume friendly with pet prizes and proceeds fund Endless Trails.

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 fam..

Hyak Halloween 25K : overview The Hyak Halloween 25K is a trail run on October 25, 2025 at Snoqualmie Pass, WA, held on Snoqualmie Tribe Ancestral Lands. The event distance is 25K with 1,800 feet of elevation gain and the same elevation los..

Salt Creek 24 invites runners to circle a scenic coastal loop all day and all night or tackle repeated summit laps in the Last Runner Standing format at Salt Creek Recreation Area. Enjoy camping, a pavilion and stocked aid stations.

Carkeek Cooler Trail Run The event takes place on Saturday, November 1, 2025, at Carkeek Park in Seattle, Washington. Distances offered: 5k 10k The run is part of the 2025-26 Winter Trail Series. Course and aid The course starts and finis..

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..

Tackle scenic, technical singletrack in Issaquah at the Grand Ridge Trail Run, with distances from 5 Mile to 50K and big climbs. Finishers get handmade solar powered swag and there is a free 1.1 mile kids race.

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..

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 elevati..

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 vet..

Event details Less Turkey, More Trot is a virtual trail event in Olympia, WA that runs from November 22 to November 30, 2025. Participants choose one or more distances and complete the course from the McKenny Trailhead at Margaret McKenny C..

Event The Ruff takes place on Sunday, November 23, 2025, at Dog Mountain Trailhead near Carson, WA, in the Columbia River Gorge National Scenic Area. The event distance is: 7 miles Top three male and female finishers will receive awards...

Climb 89 in Richland WA is an early December hill repeat on Badger Mountain where runners stack elevation by repeating a steep climb. Limited to 100 runners, the event includes food, a finisher award and a cash prize for a course record.

Event overview The Redmond Reindeer Romp takes place on December 6, 2025, at Redmond Watershed Preserve in Redmond, WA. The event is part of the 2025-26 Winter Trail Series and offers the following distances: 5-mile Half marathon Online p..

Run scenic coastal trails at Deception Pass State Park with 50K, 25K and a free kids 1K. Expect technical single track, bluff views and two crossings of the iconic Deception Pass Bridge, then celebrate with food, local beer and live music.

Saturnalia - Olympia, WA Saturnalia is a trail running event held in Squaxin Park, Olympia, Washington, on December 13, 2025. The event is organized by Rock Candy Running and is listed as a 10K trail race. It is described as a year-end, hol..