UW Medicine Seattle Marathon
Seattle, Washington, United States
Nov 29, 2026 - Sunday
Half-marathon, Marathon
Video
Race Information
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RunGuides Pick of the Month: Downhill Super Series 🪽
3 of the Fastest Boston Qualifier Courses in the U.S.
#22 Fastest | #35 Fastest | #5 Fastest 🇺🇸
Boston Marathon qualifying eligible with no downhill penalty! Marathon and half marathon distances un through the iconic Snoqualmie Tunnel.
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🌲 Jack & Jill Marathon & Half - July 25 & 26th
⛰️ Cascade Express Marathon & Half - Sept. 12th
These smooth rail-trail courses feature sustained net downhill profiles designed to help runners chase personal bests and Boston Qualifying times. Located along the Palouse to Cascades Trail, this historic rail tunnel offers cool temperatures and a unique running experience before the course continues downhill toward the finish.
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Race Facts
Race Size: 5,000 - 10,000
Elevation: Some Hills
Course Type: Road
Boston Qualifier: Yes
Kids Run: Yes
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