There are
355 mi
from Chattanooga, TN to Ashland, KY
That's the driving distance. It would take 6 hours 53 mins to go from Chattanooga, Tennessee to Ashland, Kentucky.
The flight distance (direct flight from Chattanooga, TN to Ashland, KY) is 279.48 mi.
355 mi = 570.70 kms