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The Seattle Marathon on Sunday will close ramps on I-5 and SR 520, the I-5 and I-90 express lanes, and various streets around the city.

Marathon events begin at 7:15 on 5th Avenue between Harrison and Mercer Streets, east of the Experience Music Project.

Marathoners will travel through downtown streets, along the shores of Lake Washington, through the Arboretum and back to the Seattle Center. The marathon and half-marathon crosses the I-90 floating bridge.

Side streets in neighborhoods around the city will be closed. Neighborhood impact timeline

Marathon course map

Affected streets map

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