Green River Marathon
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Green River Marathon
The Green River Marathon on June 5, 2027 is the 31st annual running offering multiple race options along the Green River and Interurban trail corridor in the Seattle area. Event formats listed include a full marathon, a half marathon, relay teams, and a 50K.
The route traditionally begins near the intersection of the Green River trail and the Interurban trail in South Kent and finishes in the Alki area in Seattle, with the finish in front of Spud's Fish and Chips. The course is described as very flat with two short hills late in the route and the final miles include views of Seattle and Puget Sound toward the Olympic Mountains.
Support arrangements have varied by year. An aid station at about 6.55 miles has been part of past events, and participants have been asked to carry personal fluids and supplies when support is limited. The event has been organized as a low key, entry free run with volunteer staffing; donations to Northwest Harvest have been collected in past years to cover event costs and charity contributions. Relay participation has been flexible, with teams sharing legs of varying lengths and roughly a quarter of participants on relays in past editions. Visit the organization's website for the most recent information.
