There are
2,616 mi
from Gaithersburg, MD to Garden Grove, CA
That's the driving distance. It would take 1 day 22 hours to go from Gaithersburg, Maryland to Garden Grove, California.
The flight distance (direct flight from Gaithersburg, MD to Garden Grove, CA) is 2,274.81 mi.
2,616 mi = 4,210.27 kms