Trail Running calendar near West Seattle 2025-2026

Enjoy the scenic Redmond Marathon along Sammamish River and Marymoor Park trails with full and half options on a Boston qualifying out and back course. Friendly aid stations and prize bonuses await top finishers.

Run the Olympic Adventure Trail in Port Angeles with 12K, half marathon or 50K on scenic single track through forest and coastal views. Limited to 130 runners, with shuttles, cupless hydration and a finish party supporting local trails.

Run the Vancouver Island Trail Running Series at Royal Roads University in Colwood on April 11, 2026 with scenic 11 km and 6 km courses plus a 1 km kids race supporting local trail stewardship. GPX routes, a campus start and post race food..

Squak Mountain Trail Runs at Squak Mountain State Park offer 12K, half marathon and 50K loop courses with big climbs, summit views and historic forest scenery. Kids races, aid stations and a brunch run make it a full day for trail lovers.

Take on the trails of Tiger Mountain in Issaquah WA on May 8 9 2026 with options from a summit Ascent to 50k, 50 mile Double, and a three person relay. Choose the order of three climbs on shared descents with timing checkpoints for each loo..

Run wooded trails through Battle Point Park and Grand Forest at the Trillium Trail Run on Bainbridge Island. Pick 5K, 10K or a kids fun run while supporting the Trails Connect Bainbridge Island campaign to build and maintain local trails.

Hit the fern lined single track of Cougar Mountain for a friendly trail run with 5 and 10 mile options, rolling hills and short climbs. Part of a summer series and supporting King County Parks.

Run the Soaring Eagle Trail Run at Soaring Eagle Regional Park in Sammamish on May 16, 2026. Choose 5K, 10K, half marathon, kids or brunch runs on scenic forest trails with roots and rocks, aid stations, and a fun community atmosphere.

Take on the Freedom 50 in Puyallup, WA, choosing the 50 Mile or 50k routes along the scenic Foothills Trail with views of the White River bridge and stocked aid stations. Finishers earn a custom cast medal plus local perks.

Run laps around scenic Lake Tye in Monroe in a timed ultrarun offering 12 hour, 6 hour, and 3 hour options on a 1.75 mile loop. Enjoy full aid, beach access, wooden finisher coasters, and support local trails with every step.

Explore Vashon Island's Gateway Trail system with 50K, 20 mile and 10 mile options over groomed but technical single and double track featuring short steep climbs and rooty turns. Small field, aid stations, live tracking and Friday night ca..

Rainier to Ruston Rail-Trail Relay (R2R) is a National Trails Day running event spanning from Mount Rainier to Ruston, near Tacoma, Washington. Scheduled for June 6, 2026, the race brings athletes and community members together to run along..

Run scenic loops at Tiger Mountain State Forest on June 6, 2026, from a rolling 5K to a half marathon with big climbs and sweeping singletrack descents. Bring hydration for longer distances.

Run a scenic, mostly downhill mountain course from Snoqualmie Pass to North Bend, including a memorable passage through a dark tunnel. Fast, USATF certified route with strong BQ history makes it a favorite for goal chasing runners.

Run the scenic Super HYAK Marathon or Half on June 13 in Snoqualmie Pass and North Bend, WA. USATF certified point to point gravel courses with net downhill, the half crosses the Snoqualmie Tunnel, and finishers get a medal and tech shirt.

Explore Cougar Mountain single track trails on June 13 with options from 5K to 14.5 miles through forested hills and wetlands. Organized by Seattle Running Club and Northwest Trail Runs, part of each entry benefits King County Parks.

Run the Tiger Peak Challenge near Issaquah, WA on June 20, 2026 with 5 Mile, Half Marathon, 50K and Kids Race options. Tackle steep ridgelines and forest trails with staffed aid stations and cupless refillable hydration.

Run the 24th annual Hotfoot 5K at South Kitsap Regional Park in Port Orchard on June 20, 2026, a scenic mostly flat loop through wooded trails and park features. Proceeds support community scholarships and the Fourth of July fireworks and a..

Run the Yeti Washington ultra on the Palouse to Cascades Trail June 26 to 27. Choose 100K, 100 mile or 200K from Hyak Sno Park and tackle a crushed limestone out and back with a cold 2.3 mile tunnel and crew friendly aid.

Run scenic single track trails on Cougar Mountain in Bellevue with 5K, 10.8 mile or 19.5 mile options. This cup free race includes post race food and beer and a small donation supports King County Parks.