There are
511 mi
from Sioux City, IA to Downers Grove, IL
That's the driving distance. It would take 9 hours 23 mins to go from Sioux City, Iowa to Downers Grove, Illinois.
The flight distance (direct flight from Sioux City, IA to Downers Grove, IL) is 432.17 mi.
511 mi = 821.73 kms