There are
1,195 mi
from St George, UT to South Sioux City, NE
That's the driving distance. It would take 21 hours 14 mins to go from St George, Utah to South Sioux City, Nebraska.
The flight distance (direct flight from St George, UT to South Sioux City, NE) is 981.87 mi.
1,195 mi = 1,922.74 kms