There are
2,782 mi
from Gaithersburg, MD to Orinda, CA
That's the driving distance. It would take 2 days to go from Gaithersburg, Maryland to Orinda, California.
The flight distance (direct flight from Gaithersburg, MD to Orinda, CA) is 2,408.16 mi.
2,782 mi = 4,476.89 kms