There are
816 mi
from Walnut Creek, CA to Bainbridge Island, WA
That's the driving distance. It would take 15 hours 54 mins to go from Walnut Creek, California to Bainbridge Island, Washington.
The flight distance (direct flight from Walnut Creek, CA to Bainbridge Island, WA) is 671.97 mi.
816 mi = 1,313.12 kms