There are
792 mi
from Clarksville, TN to Baytown, TX
That's the driving distance. It would take 14 hours 42 mins to go from Clarksville, Tennessee to Baytown, Texas.
The flight distance (direct flight from Clarksville, TN to Baytown, TX) is 643.46 mi.
792 mi = 1,274.45 kms