There are
800 mi
from Flower Mound, TX to Crossville, TN
That's the driving distance. It would take 14 hours 13 mins to go from Flower Mound, Texas to Crossville, Tennessee.
The flight distance (direct flight from Flower Mound, TX to Crossville, TN) is 716.15 mi.
800 mi = 1,287.50 kms