There are
2,356 mi
from Napa, CA to Gallatin, TN
That's the driving distance. It would take 1 day 17 hours to go from Napa, California to Gallatin, Tennessee.
The flight distance (direct flight from Napa, CA to Gallatin, TN) is 1,961.41 mi.
2,356 mi = 3.22 kms