There are
688 mi
from Chattanooga, TN to Elkton, MD
That's the driving distance. It would take 12 hours 54 mins to go from Chattanooga, Tennessee to Elkton, Maryland.
The flight distance (direct flight from Chattanooga, TN to Elkton, MD) is 608.10 mi.
688 mi = 1,107.71 kms