There are
2,149 mi
from Walnut Creek, CA to Greendale, WI
That's the driving distance. It would take 1 day 13 hours to go from Walnut Creek, California to Greendale, Wisconsin.
The flight distance (direct flight from Walnut Creek, CA to Greendale, WI) is 1,812.53 mi.
2,149 mi = 3,459.07 kms