There are
1,304 mi
from Sioux City, IA to Caldwell, ID
That's the driving distance. It would take 22 hours 13 mins to go from Sioux City, Iowa to Caldwell, Idaho.
The flight distance (direct flight from Sioux City, IA to Caldwell, ID) is 1,024.34 mi.
1,304 mi = 1.61 kms