Trail Running calendar near Downtown Seattle 2026-2027

Cirque Series at Crystal Mountain is a 7.9 mile trail race with 2,614 feet of vertical gain on September 19, 2026. Sport, Expert and Pro divisions offer prizes and series points, and timing is by disposable bib chip.

Remote ultra events near Leavenworth, WA feature the Plain 100K and Plain 100 Mile on USFS trails and roads with about 21,000 feet of elevation change and self-support requirements.

A two day 70 mile trail relay at Moran State Park on Orcas Island, run over twelve legs by teams of two to six. The course moves through forests, lakeshores, wetlands and the 2,399 foot Mount Constitution summit.

Ultra Fest in Easton, Washington offers 100 mile, 100k, 50 mile, 50k and 25k races on a mostly flat gravel Foothills Trail with lakeside and mountain scenery. The event provides on-site parking, crew access, stocked aid stations, and distan..

A remote mountain ultrarace near Cle Elum, WA on September 19 and 20, 2026 offering *100M*, *50M*, and *50K* courses with large elevation gain, remote aid stations and required safety gear. The 100 mile entry includes qualifying and trail w..

A 5K themed walk or run at Magnuson Park with Villain Zones and a Heroes Village, featuring mixed gravel and trail sections, mild inclines, and welcome leashed dogs and suitable strollers; costumes are encouraged.

A coastal trail event in Anacortes offering marathon, half marathon, 5 mile and kids race on looped courses with ocean views. Half and full marathon runners cross Deception Pass Bridge and finish near Bowman Bay.

A two day mountain running festival in North Bend, WA featuring the Skyline 30k, Mt Si VK, Little Si 10k, and a North Bend Double, plus outdoor exhibits and awards across Elite, Sport, Masters and Nonbinary divisions.

Baker Lake Classic 25k on Sunday October 4, 2026 is a 25k event organized by NW Endurance Events. Registration closes October 3 and the entry fee is $80 with a race shirt offered for $25.

The North Bend Skyline 30K will take place in North Bend on Monday 5 October 2026.

Remote alpine ultraruns near Leavenworth offering a 50K and a 50 mile course with high ridgelines, technical single track, multiple aid stations, and a cupless policy. A short kid’s race runs the same day.

A six hour trail running event on the Swauk Forest Discovery Trail near Blewett Pass on October 10, 2026. The 2.45 mile single track loop has about 650 ft of climbing and features a fall themed potluck aid station and a post race dinner opt..

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.

A multiformat endurance event at Salt Creek Recreation Area with 12 hour and 24 hour loop options, a relay format, and a Last Runner Standing summit challenge offering coastal views and stocked aid stations.

Carkeek 12 Hour is a looped trail event at Carkeek Park offering 12 hour and 6 hour options on a 1.93 mile loop with 436 feet gain per lap. The 2026 in-person event is October 24 and a virtual option runs October 1 to 31 with costume prizes..

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.

Join this unique Halloween themed relay scramble in Black Diamond. Form a team to track down rogue ghosts and return them to Civic Park in a race that combines running with a scavenger hunt.

A Halloween trail run in Port Gamble offering a 10K course of single track and dirt roads with about 600 feet of climbing mostly in the first three miles, chip timing, a pre race costume contest, awards for top finishers, and a 100 runner l..

Trail races at Cougar Mountain Regional Wildland Park near Seattle, offering 5k, 7.6 mi, 19.5 mi and 50k courses on varied single-track and groomed trails, with substantial elevation gain and proceeds supporting King County Parks.

The final race of the Evergreen trail season at Grand Ridge Park offers 5 Mile, Half Marathon, Full Marathon and 50K options on forested trails with technical climbs, aid stations and cupless race rules.