There are
2,771 mi
from Gaithersburg, MD to Sonoma, CA
That's the driving distance. It would take 2 days to go from Gaithersburg, Maryland to Sonoma, California.
The flight distance (direct flight from Gaithersburg, MD to Sonoma, CA) is 2,414.70 mi.
2,771 mi = 4,459.90 kms