Directions

From Seattle:
Take I-5 North until the 526 exit, take it west about 1 mile.  Follow 525 North till you reach the Mukilteo - Clinton Ferry.  After disembarking from the ferry,  travel North on 525 unless you reach Greenbank.
Google Maps directions

From the Olympic Peninsula:
Take the Port Townsend - Keystone Ferry located in downtown Port Townsend.  After disembarking from the ferry, go North on Engle Rd about 4 miles until you reach Coupeville.
Google Maps directions

From Bellingham:
Take I-5 South. Exit 230 towards HWY 20/Anacortes/Burlington. Turn Right at Goldenrod Rd. Turn Left at WA-20. Travel 11.6 miles and Turn Left to stay on WA-20. Stay on WA-20, 26 miles to Coupeville.
Google Maps directions