There are
859 mi
from Spokane, WA to Walnut Creek, CA
That's the driving distance. It would take 16 hours 41 mins to go from Spokane, Washington to Walnut Creek, California.
The flight distance (direct flight from Spokane, WA to Walnut Creek, CA) is 713.37 mi.
859 mi = 1,382.09 kms