Washington
Washington Trail Running Calendar 2026-2027
Explore the best trail runs in Washington for 2026-2027! Our updated list features 146 exciting trail runs across the region. Find your next trail run in Washington below and join the trail community at these great events!
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.
Lap-based trail event at Osprey Park in Sultan WA on October 17, 2026 offering marathon distance or timed 3 hour and 6 hour 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.
2 hour and 6 hour AMLAP trail events in Spokane, WA on Oct 17, 2026 over a 6 mile out and back course on Quartz Mountain Lookout Trail.
Approximately 10-mile GBRC trail race in Blanchard State Forest with over 2,000 feet of climbing, one aid station, shuttle parking, and overall and age-group awards.
Experience the beauty of the Olympic Peninsula at Salt Creek 24. Choose between 12 or 24 hour solo runs, relay teams, or a Last Runner Standing trail challenge overlooking the Strait of Juan de Fuca.
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.
Trail event at Chamna Natural Preserve on October 24, 2026 offering 6K, 10K and a half marathon with awards, snacks and costume-friendly fun.
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.
An evening 5K glow run/walk through trails and around barns at Northern State Recreation Area, featuring spooky elements and trail hazards. Early registration and limited medals and goodie bags are available.
A community Halloween running event in Vancouver WA on October 24 featuring youth races, high school 5k races, and an open 5k with medals and fleece prizes.
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.
Trail races at Cougar Mountain Regional Wildland Park near Seattle offering 5k, 7.6 mile, 19.5 mile and 50k courses through forested single track, rolling hills and marshes. Proceeds support King County Parks.
Trail races of 25K, 14K and 4K in Capitol Forest near Olympia with marked courses, costume prizes, and post run food and fire.
November 2026
Forest trails at Grand Ridge offer 5-mile, half, marathon and 50K options with significant climbing, cupless aid stations, and a separate kids course.
Trail races in Klickitat including a point to point half marathon and a 5K, raising funds for the Klickitat School District and community center.
Weekend trail festival in Chehalis, WA offering 100 mile, 50 mile, 50K, 25K and a 5K the next day on a flat, packed gravel rail trail.
Trail running at Carkeek Park in Seattle with 5k and 10k forest courses featuring varied trail widths and rolling to steep sections. The 10k is two laps of the 5k and includes substantial climb.