There are
2,159 mi
from Gallatin, TN to Santa Maria, CA
That's the driving distance. It would take 1 day 13 hours to go from Gallatin, Tennessee to Santa Maria, California.
The flight distance (direct flight from Gallatin, TN to Santa Maria, CA) is 1,900.56 mi.
2,159 mi = 3,474.18 kms