There are
2,356 mi
from Gallatin, TN to Gresham, OR
That's the driving distance. It would take 1 day 17 hours to go from Gallatin, Tennessee to Gresham, Oregon.
The flight distance (direct flight from Gallatin, TN to Gresham, OR) is 1,961.67 mi.
2,356 mi = 3,791.14 kms