Miles between San Marcos, CA and Frederick, MD

There are
2,621 mi
from San Marcos, CA to Frederick, MD

That's the driving distance. It would take 1 day 22 hours to go from San Marcos, California to Frederick, Maryland.

The flight distance (direct flight from San Marcos, CA to Frederick, MD) is 2,237.76 mi.

2,621 mi = 3.22 kms