There are
2,807 mi
from Gaithersburg, MD to Newman, CA
That's the driving distance. It would take 2 days 1 hour to go from Gaithersburg, Maryland to Newman, California.
The flight distance (direct flight from Gaithersburg, MD to Newman, CA) is 2,358.50 mi.
2,807 mi = 4,518.05 kms