West Seattle
Trail Running Calendar near West Seattle 2026-2027
Explore the top trail runs near West Seattle for 2026-2027! We've gathered 61 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
A 5k in Ravenna Park where participants run or walk wooded trails while watching for Bigfoot sightings, with in person, virtual and free kids options.
A Last Person Standing race on October 17, 2026 at Lord Hill Regional Park featuring repeated 0.8 mile loops, a 233 ft climb, shrinking lap times and medieval-themed prizes.
The 20th annual Carkeek 12 Hour at Carkeek Park features 12 and 6 hour loop races on a 1.93 mile course with costume prizes and proceeds benefiting local trails.
A costumed community event at Lincoln Park featuring a trail 5K, kids dashes, and a virtual shirt option to support South Seattle College Cooperative Preschools. Registration includes a Monster Dash shirt and the 5K includes a timed bib.
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.
10K trail race in Port Gamble, WA on Oct 31, 2026, about 600 ft climbing; costume contest, chip timing, entries limited to 100.
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.
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 run/walk in Tacoma honoring veterans and supporting Project Recover's efforts to account for about 81,000 unaccounted service members.
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.