Miles between Decatur, AL and Sycamore, IL

There are
639 mi
from Decatur, AL to Sycamore, IL

That's the driving distance. It would take 12 hours 6 mins to go from Decatur, Alabama to Sycamore, Illinois.

The flight distance (direct flight from Decatur, AL to Sycamore, IL) is 518.38 mi.

639 mi = 1,028.22 kms