There are
999 mi
from Provo, UT to South Sioux City, NE
That's the driving distance. It would take 17 hours 26 mins to go from Provo, Utah to South Sioux City, Nebraska.
The flight distance (direct flight from Provo, UT to South Sioux City, NE) is 804.55 mi.
999 mi = 1,607.97 kms