There are
792 mi
from Amarillo, TX to Dyersburg, TN
That's the driving distance. It would take 13 hours 58 mins to go from Amarillo, Texas to Dyersburg, Tennessee.
The flight distance (direct flight from Amarillo, TX to Dyersburg, TN) is 700.70 mi.
792 mi = 1,274.57 kms