Ready to race? Register directly on the official race website — opens in a new tab.
Register →Save this race to your wishlist, set a registration reminder, and build a full training plan on Trehko.
Seattle Half Marathon is a half marathon running event held in Seattle, WA on Nov 29, 2026. It draws 8,000 competitors. The course features rolling hills.
Trehko tracks registration status, entry fees, and deadlines for Seattle Half Marathon and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
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