There are
851 mi
from Sioux City, IA to Gallatin, TN
That's the driving distance. It would take 15 hours 45 mins to go from Sioux City, Iowa to Gallatin, Tennessee.
The flight distance (direct flight from Sioux City, IA to Gallatin, TN) is 677.70 mi.
851 mi = 1,368.89 kms