There are
805 mi
from Walnut Creek, CA to Bothell, WA
That's the driving distance. It would take 15 hours 32 mins to go from Walnut Creek, California to Bothell, Washington.
The flight distance (direct flight from Walnut Creek, CA to Bothell, WA) is 681.02 mi.
805 mi = 1,295.28 kms