There are
692 mi
from Clarksville, TN to Watauga, TX
That's the driving distance. It would take 12 hours 31 mins to go from Clarksville, Tennessee to Watauga, Texas.
The flight distance (direct flight from Clarksville, TN to Watauga, TX) is 616.31 mi.
692 mi = 1,112.94 kms