Course Map: Tukwila To Alki Half Marathon

Runners follow a point-to-point course for the Tukwila To Alki Half Marathon, which starts in the small suburban city of Tukwila and ends in Alki Beach Park, along the Puget Sound shoreline and just to the southwest of downtown Seattle. The half marathon route starts at the half-way point of the Green River Marathon, which is run between Kent and Alki each June, and follows a combination of roadways and biking, walking and running trails along the second 13.1 miles of that race.

(MORE: Tukwila To Alki Half Marathon event details)

Turn-by-Turn Directions

  • Start at Interurban Avenue South & 56th Avenue South
  • Right onto Green River Trail
  • Follow Green River Trail for the next 3 1/2 miles
  • Turn left onto West Marginal Place
  • West Marginal merges with 14th Avenue South
  • Left on South Henderson Street
  • Right on Duwamish Bikeway
  • Right on 8th Avenue South
  • Left on South Kenyon Street
  • Right on 5th Avenue South
  • Left on South Holden Street
  • Right on Duwamish Bikeway, stay on for next 2 1/2 miles
  • Left onto West Marginal Way
  • Left on Southwest Marginal Place
  • Right onto Alki Trail
  • Follow Alki Trail to finish line at Alki Beach Park

<< Back to the Tukwila To Alki Half Marathon

Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, contact us here.

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