There are
520 mi
from Chattanooga, TN to Rantoul, IL
That's the driving distance. It would take 9 hours 31 mins to go from Chattanooga, Tennessee to Rantoul, Illinois.
The flight distance (direct flight from Chattanooga, TN to Rantoul, IL) is 395.47 mi.
520 mi = 837.26 kms