There are
2,657 mi
from Palmdale, CA to Greenbelt, MD
That's the driving distance. It would take 1 day 23 hours to go from Palmdale, California to Greenbelt, Maryland.
The flight distance (direct flight from Palmdale, CA to Greenbelt, MD) is 2,282.68 mi.
2,657 mi = 3.22 kms