There are
2,636 mi
from Gaithersburg, MD to Lomita, CA
That's the driving distance. It would take 1 day 23 hours to go from Gaithersburg, Maryland to Lomita, California.
The flight distance (direct flight from Gaithersburg, MD to Lomita, CA) is 2,294.35 mi.
2,636 mi = 4,242.01 kms