There are
323 mi
from Clarksville, TN to Mcdonough, GA
That's the driving distance. It would take 6 hours 11 mins to go from Clarksville, Tennessee to Mcdonough, Georgia.
The flight distance (direct flight from Clarksville, TN to Mcdonough, GA) is 280.01 mi.
323 mi = 519.27 kms