There are
848 mi
from Lewisville, TX to Clarksville, IN
That's the driving distance. It would take 15 hours 10 mins to go from Lewisville, Texas to Clarksville, Indiana.
The flight distance (direct flight from Lewisville, TX to Clarksville, IN) is 726.69 mi.
848 mi = 1,365.15 kms