Downtown Seattle
Trail Running Calendar near Downtown Seattle 2026-2027
Explore the top trail runs near Downtown Seattle for 2026-2027! We've gathered 61 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
June 2027
A 50 mile team relay from the foothills of Mount Rainier to Tacoma's Ruston Way waterfront, run by teams of 2, 3, 4, or 6 with a waterfront finish festival.
Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.
A half marathon on Bainbridge Island that begins by walking off the Seattle ferry, with mixed road and trail terrain and about 1,400 feet of elevation gain.
July 2027
Three sequential 5K trail races in Puyallup with 45 minutes per 5K and 30 minutes to transfer, limited to 100 entrants; chip timing, shirt, medal, and RaceJoy required.
A family friendly 5K mud run at Motowest MX Motocross Track with obstacles, waist deep mud pits, pre race entertainment, and standard and VIP registration options.
August 2027
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.
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
Late summer Magnuson Series event at Magnuson Park with a USATF certified 5k loop plus 10k, 15k, kids dash and obstacle dash.
Two-day Spartan Trifecta Weekend in Monroe WA featuring Sprint 5 km, Super 10 km, Beast 21 km, and kids races on forest and river valley trails.
October 2027
A community-run Half Marathon and 5K in Maple Valley on October 2, 2027, featuring a mostly gravel, scenic course, chip timing, and medals for finishers.
A two-day trail running festival in North Bend with steep mountain races including a 30K skyline, a VK uphill, community events and a $4,500 prize purse.
A backyard ultra in downtown Tacoma with a 3.33-mile loop repeated every hour for up to 15 hours, passing the Bridge of Glass and the Tacoma Dome.