West Seattle
Trail Running Calendar near West Seattle 2026-2027
Explore the top trail runs near West Seattle for 2026-2027! We've gathered 56 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
Two days of mountain running in North Bend, WA, featuring a vertical kilometer, a 30k championship with prize money, a 10k, a double option, and a full-day adventure expo.
A community Half Marathon and 5K at Lake Wilderness Park with chip timing, medals, gravel trails, and proceeds benefiting The More We Love.
A last-one-standing backyard ultra where each completed loop adds $100 to a shared prize jar and the final payout is split 75% to the winner and 25% to the runner-up.
Two-day mountain running festival in North Bend, WA featuring a vertical kilometer, the Skyline 30k championship with 6,500+ feet gain, a 10k, expo and family activities.
A Tacoma backyard ultra on a 3.3 mile downtown loop repeated each hour for up to 15 hours, totaling 45.5 miles for those who complete all laps.
Trail races on the Middle Fork and CCC trails in North Bend, WA, on October 10, 2026. Distances from 10k to 50k feature river valley scenery, aid stations, and some unbridged creek crossings.
Community 5K and 1K kids event at PLU Meadows with on site registration options and proceeds supporting local youth running needs.
A community event at Daybreak Star offering a chip-timed 5K trail run and a free 1.25 mile SpiritWalk to support culturally attuned care for Native people.
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 hill climbing elimination race at Lord Hill Regional Park on October 17, 2026 where runners repeat a steep lap under shrinking cutoffs until one person claims a crown and 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.
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
Trail races at Squak Mountain in Issaquah offering 7, 14 and 21 mile courses with aid stations, a long-sleeve race shirt and a finisher medal.
Timed loop event at Waughop Lake Loop in Lakewood WA where rounds shorten each lap and athletes compete in run, ruck, carry, hybrid, and walk divisions.