There are
2,630 mi
from Newport Beach, CA to Gaithersburg, MD
That's the driving distance. It would take 1 day 23 hours to go from Newport Beach, California to Gaithersburg, Maryland.
The flight distance (direct flight from Newport Beach, CA to Gaithersburg, MD) is 2,278.09 mi.
2,630 mi = 3.22 kms