There are
535 mi
from Green Bay, WI to South Sioux City, NE
That's the driving distance. It would take 10 hours 34 mins to go from Green Bay, Wisconsin to South Sioux City, Nebraska.
The flight distance (direct flight from Green Bay, WI to South Sioux City, NE) is 443.69 mi.
535 mi = 860.95 kms