Trail Running calendar near Sammamish Valley 2026-2027

Ultra Fest in Easton, Washington offers fast, flat trail races on the Foothills Trail across multiple distances with crew access, on-site parking, stocked aid stations, and race medals or buckles.

A themed 5K on September 19, 2026 at Magnuson Park in Seattle that invites participants to walk or run in costume. The trail route includes mild inclines and mixed surfaces and welcomes leashed dogs and suitable strollers.

A weekend of alpine trail races near Cle Elum Washington on September 19 and 20 2026 offering 100 mile, 50 mile and 50K courses with long climbs, remote aid station gaps, required safety kit and qualifying and trail work requirements.

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.

A 50K out and back at Baker Lake, Washington on October 3, 2026, starting from Kulshan Campground. The route includes paved and gravel approaches and a 14 mile single track along the lake with forested views and footbridges.

A 25K point to point trail run along the eastern shore of Baker Lake near Concrete, Washington, with views of Mt. Baker and forests regrown after an 1843 eruption; runners are bused from the finish to the start.

High elevation trail running near Leavenworth with **50 mile** and **50 kilometer** courses featuring technical single track, steep climbs, ridge views, and larch framed meadows. Multiple aid stations and a varied mountain route define the..

Trail races near North Bend, WA follow the Middle Fork and CCC trails through old-growth forest and river views. Multiple measured distances from 10k to 50k include aid stations and water 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.

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..

Experience the lush forests of the Cascade foothills in this seasonal finale featuring distances from 5 miles to a 50K ultramarathon. Run through golden fall colors and mossy trails in the heart of Grand Ridge Park.

A 5k and 10k trail run at Carkeek Park in Seattle on November 7, 2026, featuring forested singletrack, steep climbs and rolling downhills. Routes start and finish in the Lower Meadow beside Piper’s Creek.

Trail races at Deception Pass State Park offering 50K and 25K routes on technical single track trails that cross the Deception Pass Bridge twice, with multiple aid stations, drop bag support, and park parking rules.

Trail runs of 4k, 8k and 12k on a 4.1 km forested loop in Ravenna Park, Seattle, with a staffed aid station and a 230 foot climb per loop. Youth runners under 20 receive a $10 discount.

A winter trail event at Redmond Watershed Preserve on December 5, 2026 offering 5 mile and half marathon routes on well groomed, mostly smooth trails. Offsite parking with shuttle, aid stations for the half marathon, and a Winter Wonderland..

A low-cost, low-key running event in Maple Valley on December 12, 2026 offering 50K, marathon and half-marathon options; expect limited support and community volunteers rather than frequent aid stations or amenities.

A festive roughly 10K trail run in Squaxin Park that starts and finishes at Reeves Middle School. Holiday aid station, a hand crafted finisher keepsake and a tree planted for each finisher highlight the community focused event.

A winter trail run at Seward Park offering 4.2 mile and 10k loops through old growth forest as part of the 2026-27 Winter Trail Series. An aid station is on course and dogs are not allowed.