Trail Running calendar near Olympia 2026-2027

A forested loop at Seward Park on a Lake Washington peninsula offering 4.2 mile and 10k trail options, on-course aid stations, and park-side parking near the start. Part of the Tuesday Night Trail to Grill Series.

Experience the lush forests and rolling hills of Cougar Mountain Regional Wildland Park at this trail event near Seattle. Choose between 5k, 10.8 mile, and 19.5 mile distances on varied terrain ranging from technical to groomed trails.

Mud Mountain Trail Fest is a trail running event at Mud Mountain Dam in Enumclaw, Washington on July 11, 2026. It offers a 4 Miler and a 10K on forested trails described as moderately challenging.

An all-ages glow run through the Snoqualmie Tunnel on the Palouse to Cascades trail with LED lighting, two participant waves, onsite merch options, and a post-race outdoor block party with food, games and drinks.

Monthly trail races at Cougar Mountain offer a range of distances across a summer series and an October autumn event. The events raise funds for King County Parks and include USATF championship and youth races in August.

A 5K trail run and walk on Tiger Mountain with an out and back route over unpaved roads and a short cross country section. The event is clothing optional and is sponsored by Tiger Mountain Family Nudist Park.

A sponsored looped trail run with on-site shoe trials, flexible laps within a 40 minute window, and a post-run panel featuring two experienced trail athletes sharing their trail experiences.

A mountain race weekend at Crystal Mountain on July 17-18, 2026 featuring a half marathon, downhill 10K and a 5K hill climb. Registration includes an all-day gondola pass and courses run on dirt trails through meadows and forest.

A roughly 3 mile obstacle trail run at Joint Base Lewis-McChord on July 18, 2026, with timed wave starts, race packets including shirt and medal, and a post-race beverage and music.

A trail run at St. Edward State Park on July 21, 2026 offering 4 mile and 8 mile loop options on mixed single track and wider trails. The event is part of a summer series and includes an aid station, post run food, and awards.

A one-day community trail running festival in Seattle featuring social group runs in two route lengths, an expo with running brands and vendors, food and a raffle, and a cupless policy with no dogs except service animals.

A mountain trail event near Greenwater, WA offering 50M, 50K and 25K courses with big climbs, Palisades views of Mt. Rainier, technical single-track and multiple aid stations.

Weekend volunteer event in Cougar, WA where participants hike about 9 miles roundtrip to carry water into remote aid stations for a race. Camping is available nearby and organizers provide food and some loaner gear.

Volcanic stages rugged trail races around Mt. St. Helens with a full circumnavigation 50K and a 25K that shares iconic volcanic terrain, steep climbs, boulder fields, river crossings, and substantial elevation change. Both races start and f..

A two day mountain trail event on Mount Ellinor near Hoodsport, Washington, offering a 24 km skyrace and a 10 km forest loop. The skyrace is part of the Skyrunner World Series and the USA Skyrunner National Series.

Stair races and walks at Stadium Bowl in Tacoma with one lap and two lap options, a Heroes Race with weighted vests, and proceeds supporting Kindred Souls Foundation. Open to participants aged eight and up with guardian supervision for mino..

Experience the lush forests and single track trails of Bellevue in this eco friendly trail series. Choose from three distances ranging from a 5K to a full marathon while supporting King County Parks.

Tunnel Vision Marathon and Half on August 9, 2026 in North Bend WA follows a USATF certified, mostly downhill route with about 1,000 feet net drop and a passage through the Snoqualmie Tunnel. The event includes chip timing, aid stations, an..

A 200 mile point to point trail ultramarathon through the Cascade Mountains around Mount St. Helens, held August 14 to 18, 2026, with 13 aid stations and six designated sleep stations to support continuous timed runs.

A 20 mile single track trail run on the south western side of Mount St Helens, featuring lava fields, stream crossings, old growth forest and a 9 hour cutoff on National Forest lands.