There are
2,031 mi
from Gallatin, TN to Garden Grove, CA
That's the driving distance. It would take 1 day 11 hours to go from Gallatin, Tennessee to Garden Grove, California.
The flight distance (direct flight from Gallatin, TN to Garden Grove, CA) is 1,781.99 mi.
2,031 mi = 3,268.89 kms