There are
2,618 mi
from Santa Clarita, CA to Rockville, MD
That's the driving distance. It would take 1 day 23 hours to go from Santa Clarita, California to Rockville, Maryland.
The flight distance (direct flight from Santa Clarita, CA to Rockville, MD) is 2,294.67 mi.
2,618 mi = 4,213.54 kms