There are
2,693 mi
from Gaithersburg, MD to Marysville, CA
That's the driving distance. It would take 1 day 23 hours to go from Gaithersburg, Maryland to Marysville, California.
The flight distance (direct flight from Gaithersburg, MD to Marysville, CA) is 2,354.14 mi.
2,693 mi = 4,334.02 kms