There are
838 mi
from Chattanooga, TN to Ardmore, OK
That's the driving distance. It would take 15 hours 9 mins to go from Chattanooga, Tennessee to Ardmore, Oklahoma.
The flight distance (direct flight from Chattanooga, TN to Ardmore, OK) is 675.24 mi.
838 mi = 1,348.00 kms