There are
2,628 mi
from Gaithersburg, MD to Escondido, CA
That's the driving distance. It would take 1 day 23 hours to go from Gaithersburg, Maryland to Escondido, California.
The flight distance (direct flight from Gaithersburg, MD to Escondido, CA) is 2,245.85 mi.
2,628 mi = 4,229.67 kms