There are
479 mi
from Sioux City, IA to Mequon, WI
That's the driving distance. It would take 9 hours 37 mins to go from Sioux City, Iowa to Mequon, Wisconsin.
The flight distance (direct flight from Sioux City, IA to Mequon, WI) is 428.77 mi.
479 mi = 770.94 kms