There are
2,160 mi
from Santa Maria, CA to Gallatin, TN
That's the driving distance. It would take 1 day 13 hours to go from Santa Maria, California to Gallatin, Tennessee.
The flight distance (direct flight from Santa Maria, CA to Gallatin, TN) is 1,900.56 mi.
2,160 mi = 3,475.84 kms