There are
801 mi
from Clarksville, TN to Elkton, MD
That's the driving distance. It would take 14 hours 59 mins to go from Clarksville, Tennessee to Elkton, Maryland.
The flight distance (direct flight from Clarksville, TN to Elkton, MD) is 661.45 mi.
801 mi = 1,288.92 kms