There are
2,891 mi
from Gaithersburg, MD to Pacific Grove, CA
That's the driving distance. It would take 2 days 2 hours to go from Gaithersburg, Maryland to Pacific Grove, California.
The flight distance (direct flight from Gaithersburg, MD to Pacific Grove, CA) is 2,420.12 mi.
2,891 mi = 4,652.89 kms