There are
2,615 mi
from Alhambra, CA to Gaithersburg, MD
That's the driving distance. It would take 1 day 22 hours to go from Alhambra, California to Gaithersburg, Maryland.
The flight distance (direct flight from Alhambra, CA to Gaithersburg, MD) is 2,276.74 mi.
2,615 mi = 3.22 kms