There are
799 mi
from Walnut Creek, CA to Kirkland, WA
That's the driving distance. It would take 15 hours 26 mins to go from Walnut Creek, California to Kirkland, Washington.
The flight distance (direct flight from Walnut Creek, CA to Kirkland, WA) is 675.44 mi.
799 mi = 1,286.06 kms