There are
2,059 mi
from Oceanside, CA to Gallatin, TN
That's the driving distance. It would take 1 day 11 hours to go from Oceanside, California to Gallatin, Tennessee.
The flight distance (direct flight from Oceanside, CA to Gallatin, TN) is 1,761.38 mi.
2,059 mi = 3.22 kms