There are
2,000 mi
from Gallatin, TN to Montclair, CA
That's the driving distance. It would take 1 day 10 hours to go from Gallatin, Tennessee to Montclair, California.
The flight distance (direct flight from Gallatin, TN to Montclair, CA) is 1,762.80 mi.
2,000 mi = 3,218.02 kms