Seattle Ghost Marathon

The 2025 Seattle Ghost Marathon, Half & 50K is set to take place on November 29, 2025, marking the 40th edition of this popular running event. The marathon features a flat and fast course that is a certified Boston Marathon qualifier, consisting of two 13.1-mile loops along the scenic Lake Washington. Participants can choose from three events: the full marathon, half marathon, or 50K.

The race is managed by NW Ultras and Green Lake Crew, with a limit of 450 participants. Aid stations are available every 3.1 miles, and no dogs or strollers are allowed on the course. Visit the organization's website for the most recent information.