There are
2,012 mi
from Gallatin, TN to Walnut, CA
That's the driving distance. It would take 1 day 10 hours to go from Gallatin, Tennessee to Walnut, California.
The flight distance (direct flight from Gallatin, TN to Walnut, CA) is 1,773.48 mi.
2,012 mi = 3,237.25 kms