There are
268 mi
from Clarksville, TN to Erlanger, KY
That's the driving distance. It would take 5 hours 14 mins to go from Clarksville, Tennessee to Erlanger, Kentucky.
The flight distance (direct flight from Clarksville, TN to Erlanger, KY) is 228.50 mi.
268 mi = 431.22 kms