There are
634 mi
from Chattanooga, TN to Sycamore, IL
That's the driving distance. It would take 12 hours 24 mins to go from Chattanooga, Tennessee to Sycamore, Illinois.
The flight distance (direct flight from Chattanooga, TN to Sycamore, IL) is 513.18 mi.
634 mi = 1,020.97 kms