Green River Marathon
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Green River Marathon
The Green River Marathon on June 5, 2027 is presented as the 31st annual running of this marathon, relay, half marathon and 50K. The course route runs from South Kent along the Green River and Interurban trails to a finish at Alki in Seattle. The published start and finish locations are S. 259th and 74th Avenue S., Kent WA 98032 (Foster Park) and 2666 Alki Avenue SW, Seattle WA 98116 (Spud's Fish and Chips).
The course is described as very flat with two short hills late in the run. The last few miles provide views of Seattle and Puget Sound toward the Olympic mountains. Support along the route has historically been limited; an aid station is noted at 6.55 miles. Runners are advised to be self sufficient for nutrition and fluids because some aid and restroom facilities are limited along the way.
Event organization has been volunteer based and historically offered free entry, with donations used to cover event costs and to support Northwest Harvest. The event includes flexible relay options, with past years showing relays of various sizes and distance splits. Medals and other items have been distributed in past years to volunteers and to participants who provided donations. Visit the organization's website for the most recent information.
