Washington
Washington Trail Running Calendar 2026-2027
Explore the best trail runs in Washington for 2026-2027! Our updated list features 150 exciting trail runs across the region. Find your next trail run in Washington below and join the trail community at these great events!
August 2027
Trail runs from Fairhaven Park through Larrabee State Park featuring forest trails, lakes, ridgelines, and distances of 12K, 25K, 50K, plus a free kids race.
5k, 14.5 mile and 26.2 mile trail races at Cougar Mountain Regional Wildland Park near Seattle, part of an annual series supporting King County Parks.
A 200.1 mile point to point ultramarathon in Washington’s Cascade Mountains featuring Mount St. Helens, lava fields, old growth forests, 12 aid stations and 107 hour cutoff.
Singletrack mountain course on the southwestern flank of Mount St. Helens with lava fields, stream crossings, old-growth forest, 4,178' ascent and a nine hour cutoff.
Timed 18, 12, 6 and 3 hour loop races plus a Kids Loopy 30 Minute at Lincoln Park in Seattle, featuring waterfront and forest sections and on course aid stations.
A 24 hour event in Bonney Lake with a 5K every hour; participants may run between one and 24 laps and receive a medal and shirt showing how many 5Ks they completed.
A team or solo relay around Lake Padden with four 2.59 mile laps on mostly flat wooded trails and age based team categories.
Trail races in the Olympic National Forest near Quilcene, WA, featuring 100K, 50K, 25K, 10K and ruck divisions across single-track and forest roads.
Point to point trail running on Kachess Ridge near Kachess Lake offering 50K and 50 Mile options with long ridgeline miles, remote aid stations, and significant elevation gain.
Trail races in the Mt. Margaret Backcountry near Mount St. Helens offering 50K, 20 mile and half marathon loops through remote mountain terrain and lakes.
USATF certified half marathon on the Snoqualmie Valley Trail near North Bend, WA, on smooth hard packed dirt and gravel with aid stations, pacers and a virtual option.
September 2027
A multi-day trail event near Randle WA featuring a 100 mile race, a 50K, and a 14 mile fun run across remote, technical Cascade terrain.
A late summer community running event at Magnuson Park in Seattle offering 5k, 10k, 15k, a Kids Dash and an Obstacle Dash.
Trail race in Winthrop WA on September 11 2027 following the Pacific Crest Trail with six self seeding waves and a free kids race for those 17 and under.
Trail race at Crystal Mountain, WA on 09/11/2027: 7.9 miles with about 2,614 ft of ascent, Sport/Expert/Pro divisions, per-race prizes and a 500-entry cap.
Trail races and a virtual option at Mt. Spokane State Park with courses starting and finishing at Selkirk Lodge and featuring singletrack, climbs, and summit views.
Two days of obstacle-course racing in Monroe, WA with Sprint 5 km, Super 10 km, Beast 21 km, kids races and spectator access on forest trails.
An unsupported trail event in Plain Washington offering 100 mile and 100K formats; this season was canceled due to wildfire and registered runners receive a 2027 rollover.
A Phase One Missions trail event in Spokane with a 30 mile loop and 9 mile out-and-back options, GPS navigation, and five semi-stocked aid stations.
Flat, runnable gravel rail trail ultramarathon in Easton, Washington offering 25K to 100 Mile with crew access and multiple aid stations.