There are
2,173 mi
from Ontario, CA to Sevierville, TN
That's the driving distance. It would take 1 day 13 hours to go from Ontario, California to Sevierville, Tennessee.
The flight distance (direct flight from Ontario, CA to Sevierville, TN) is 1,924.47 mi.
2,173 mi = 3,496.37 kms