There are
726 mi
from Pasco, WA to Walnut Creek, CA
That's the driving distance. It would take 14 hours 26 mins to go from Pasco, Washington to Walnut Creek, California.
The flight distance (direct flight from Pasco, WA to Walnut Creek, CA) is 595.39 mi.
726 mi = 1,168.04 kms