Miles between Decatur, IL and Brookings, SD

There are
686 mi
from Decatur, IL to Brookings, SD

That's the driving distance. It would take 12 hours 21 mins to go from Decatur, Illinois to Brookings, South Dakota.

The flight distance (direct flight from Decatur, IL to Brookings, SD) is 506.80 mi.

686 mi = 1,104.57 kms