There are
2,698 mi
from Gaithersburg, MD to Coronado, CA
That's the driving distance. It would take 1 day 23 hours to go from Gaithersburg, Maryland to Coronado, California.
The flight distance (direct flight from Gaithersburg, MD to Coronado, CA) is 2,262.54 mi.
2,698 mi = 4,342.79 kms