There are
553 mi
from Sioux City, IA to Champaign, IL
That's the driving distance. It would take 10 hours 4 mins to go from Sioux City, Iowa to Champaign, Illinois.
The flight distance (direct flight from Sioux City, IA to Champaign, IL) is 454.02 mi.
553 mi = 890.50 kms