There are
980 mi
from Sioux City, IA to Cullman, AL
That's the driving distance. It would take 18 hours 3 mins to go from Sioux City, Iowa to Cullman, Alabama.
The flight distance (direct flight from Sioux City, IA to Cullman, AL) is 772.99 mi.
980 mi = 1,576.45 kms