West Seattle
Trail Running Calendar near West Seattle 2026-2027
Explore the top trail runs near West Seattle for 2026-2027! We've gathered 67 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
Beginner-friendly 2.8 mile group trail run at King County's Cougar Mountain with Teva demo shoes, post-run refreshments, and a chance to win Trailpeak shoes.
Free evening relay in Black Diamond where teams hunt six hidden ghosts in Civic Park, with costume and team-name awards and a bonus ghost prize.
A 10K trail race in Port Gamble, WA on October 31, 2026 with single-track and dirt roads, about 600 ft of climbing, a costume contest, and chip timing.
November 2026
A descending-clock loop in Lakewood where each round shortens by one minute and participants walk, ruck, run, or do hybrid rounds around a shared basecamp.
Cross-country meet at Lincoln Park in Seattle with 6K, 8K and 10K races; team and individual entry options and a $15 registration fee.
A six hour loop race at Nolte State Park on a 1.4 mile crushed gravel and packed dirt course, fee waived with optional donations supporting the Washington Trail Association.
A community 5K in Tacoma on 11/15/2026 that honors veterans and partners with Project Recover to raise awareness about missing service members.
Trail Turkey Trot at Newberry Hill Heritage Park offering 1 Mile, 5K, 10K and a kids dash, with proceeds supporting local hunger relief.
A marathon and half marathon on the Kirkland Corridor Course on November 26, 2026 using a short out and back layout with on-site parking and aid at the start.
December 2026
Run through the scenic forests of the Redmond Watershed Preserve in a festive 5 mile or half marathon trail race featuring smooth trails and rolling hills.
A six-race Winter Grand Prix of two mile road, track and cross country events in 2026-2027 with series prizes from New Balance and Super Jock n Jill.
Low cost, low support trail running event in Maple Valley offering Half Marathon, Marathon and 50K on December 12, 2026 with a manned aid station and marked course.
A multiple lap trail event at Mt Walker trailhead in Quilcene, Washington, featuring a 4 miles round trip course and about 2,100 ft elevation gain per lap.