There are
2,133 mi
from Boise, ID to Sevierville, TN
That's the driving distance. It would take 1 day 13 hours to go from Boise, Idaho to Sevierville, Tennessee.
The flight distance (direct flight from Boise, ID to Sevierville, TN) is 1,803.40 mi.
2,133 mi = 3.22 kms