There are
178 mi
from Clarksville, TN to Chattanooga, TN
That's the driving distance. It would take 3 hours 23 mins to go from Clarksville, Tennessee to Chattanooga, Tennessee.
The flight distance (direct flight from Clarksville, TN to Chattanooga, TN) is 153.99 mi.
178 mi = 286.14 kms