There are
2,618 mi
from Gaithersburg, MD to La Palma, CA
That's the driving distance. It would take 1 day 22 hours to go from Gaithersburg, Maryland to La Palma, California.
The flight distance (direct flight from Gaithersburg, MD to La Palma, CA) is 2,278.66 mi.
2,618 mi = 4,212.69 kms