There are
965 mi
from Sioux City, IA to Chattanooga, TN
That's the driving distance. It would take 17 hours 51 mins to go from Sioux City, Iowa to Chattanooga, Tennessee.
The flight distance (direct flight from Sioux City, IA to Chattanooga, TN) is 787.57 mi.
965 mi = 1,553.53 kms