There are
2,164 mi
from Pendleton, OR to Gallatin, TN
That's the driving distance. It would take 1 day 13 hours to go from Pendleton, Oregon to Gallatin, Tennessee.
The flight distance (direct flight from Pendleton, OR to Gallatin, TN) is 1,788.80 mi.
2,164 mi = 3,482.18 kms