There are
2,171 mi
from Appleton, WI to Walnut Creek, CA
That's the driving distance. It would take 1 day 13 hours to go from Appleton, Wisconsin to Walnut Creek, California.
The flight distance (direct flight from Appleton, WI to Walnut Creek, CA) is 1,793 mi.
2,171 mi = 3.22 kms