There are
758 mi
from Crossville, TN to Sulphur, LA
That's the driving distance. It would take 14 hours 7 mins to go from Crossville, Tennessee to Sulphur, Louisiana.
The flight distance (direct flight from Crossville, TN to Sulphur, LA) is 623.59 mi.
758 mi = 1,219.96 kms