There are
422 mi
from Sioux City, IA to Fort Atkinson, WI
That's the driving distance. It would take 8 hours 31 mins to go from Sioux City, Iowa to Fort Atkinson, Wisconsin.
The flight distance (direct flight from Sioux City, IA to Fort Atkinson, WI) is 384.96 mi.
422 mi = 678.47 kms