The Half-Marathon is a one way 13.1 Mile run that starts at Marymoor Park in Redmond and finishes at Lake Sammamish Park in Issaquah. Half-Marathon Parking, Check-In and Start are at Marymoor Park, and there are shuttles waiting at the finish line at Lake Sammamish State Park to bring you back to Marymoor Park. Shuttles are included in the entry fee. If you have family/friends that want to cheer you on or pick you up at the finish, there is plenty of parking at Lake Sammamish State Park, but a Discover Pass is required for access of the park.
For directions to the Start inside Marymoor Park, use Bing or Google Maps and type "NE Marymoor Way, Redmond, WA" as the address. The Start is by the Velodrome. If you are coming from SR-520, use the West Lake Sammamish Exit and turn right. After about 300 yards turn left and follow the signage.
For directions to the Finish, use "2000 Northwest Sammamish Rd, Issaquah, WA"