There are
916 mi
from Clarksville, TN to Seguin, TX
That's the driving distance. It would take 16 hours 14 mins to go from Clarksville, Tennessee to Seguin, Texas.
The flight distance (direct flight from Clarksville, TN to Seguin, TX) is 779.22 mi.
916 mi = 1,474.14 kms