There are
276 mi
from Kansas City, MO to South Sioux City, NE
That's the driving distance. It would take 5 hours 7 mins to go from Kansas City, Missouri to South Sioux City, Nebraska.
The flight distance (direct flight from Kansas City, MO to South Sioux City, NE) is 251.57 mi.
276 mi = 444.44 kms