• Lake Sammamish Half Marathon

    Come join us for a flat and fast run along beautiful Lake Sammamish!

    2015 registration is now open!
  • Lake Sammamish Half Marathon

    Come join us for a flat and fast run along beautiful Lake Sammamish!

    2015 registration is now open!
  • Lake Sammamish Half Marathon

    Come join us for a flat and fast run along beautiful Lake Sammamish!

    Benefits Cascade Challenge



The Lake Sammamish Half Marathon is a prodcution of 4th Dimension Racing
Other productions by 4th Dimension Racing include the Evergreen Trail Runs Series and the NW Epic Series