Miles between Sioux Falls, SD and Decatur, IL

There are
635 mi
from Sioux Falls, SD to Decatur, IL

That's the driving distance. It would take 11 hours 31 mins to go from Sioux Falls, South Dakota to Decatur, Illinois.

The flight distance (direct flight from Sioux Falls, SD to Decatur, IL) is 474.43 mi.

635 mi = 1,021.77 kms