There are
1,138 mi
from Amarillo, TX to Sevierville, TN
That's the driving distance. It would take 19 hours 59 mins to go from Amarillo, Texas to Sevierville, Tennessee.
The flight distance (direct flight from Amarillo, TX to Sevierville, TN) is 1,026.54 mi.
1,138 mi = 1,830.64 kms