Seattle
Trail Running Calendar near Seattle 2026-2027
Explore the top trail runs near Seattle for 2026-2027! We've gathered 62 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
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 single track and dirt roads with about 600 feet of climbing, a pre race costume contest, chip timing, and custom finisher medals.
November 2026
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.
Holiday 3 mile run and walk at Wright Park on Dec 24, 2026 with two start sessions, chip timing, participant beanie and medal, plus a donation drive for Tacoma Rescue Mission.
January 2027