There are
2,613 mi
from Santa Clarita, CA to Gaithersburg, MD
That's the driving distance. It would take 1 day 22 hours to go from Santa Clarita, California to Gaithersburg, Maryland.
The flight distance (direct flight from Santa Clarita, CA to Gaithersburg, MD) is 2,291.71 mi.
2,613 mi = 4,205.67 kms