2026 UW Medicine Seattle Marathon and Half Marathon
About the race
The UW Medicine Seattle Marathon and Half Marathon, Seattle's original hometown marathon and the oldest marathon in the Pacific Northwest, is set on a beautiful course with rolling hills and scenic views of Seattle's iconic bridges, waterways and architecture.
It is a Thanksgiving weekend tradition, held on Sunday, November 29, 2026.
The course
21 km
42 km
The course runs with rolling hills and scenic views of Seattle's iconic bridges, waterways and architecture.
Location
Seattle, WA, USA Open in Google Maps
City insight: Seattle
Seattle is the most populous city in Washington State and the Pacific Northwest, situated on an isthmus between Puget Sound and Lake Washington. It is the county seat of King County and the northernmost major city in the United States. The climate is mild and often damp, with dry summers and wet winters, so summer and early autumn are the best seasons to race.
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