There are
735 mi
from Walnut Creek, CA to Lacey, WA
That's the driving distance. It would take 14 hours 5 mins to go from Walnut Creek, California to Lacey, Washington.
The flight distance (direct flight from Walnut Creek, CA to Lacey, WA) is 631.86 mi.
735 mi = 1,182.11 kms