Lake Sammamish State Park is a beautiful location for all kinds of outdoor activities. If you're not already a regular visitor to the Park, we think your "tour" of the Park via the Traithlon and Run courses will have you coming back for more.
From Eastbound or Westbound I-90
Take Exit 15. At the top of the Exit ramp, proceed north. Turn left (West) onto NW Sammamish Road -- You’ll see an Arco station on the left. The Lake Sammamish State Park main entrance is about 1/2 mile down on the right hand side. Click on map below for more detailed driving directions.
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