UW Medicine Seattle Marathon and Half Marathon 2026

The UW Medicine Seattle Marathon and Half Marathon takes place on a late-November weekend in downtown Seattle. Both races begin at Seattle Center near 5th & Harrison and conclude at Bell Harbor Pier 66. The half marathon starts at 7:00 AM, with the full marathon following at 7:30 AM, structuring the morning around two primary road races instead of one. The course begins at Seattle Center and finishes along the waterfront at Pier 66. Race headquarters, which includes the expo, registration, and bib and shirt pickup, is located at The Westin Seattle on Fifth Avenue; this venue has been used for over 20 years. The event also features a Kids Marathon at Pier 66 and a virtual race option.