There are
2,585 mi
from Gaithersburg, MD to Palmdale, CA
That's the driving distance. It would take 1 day 22 hours to go from Gaithersburg, Maryland to Palmdale, California.
The flight distance (direct flight from Gaithersburg, MD to Palmdale, CA) is 2,264.40 mi.
2,585 mi = 4,160.05 kms