Miles between Castle Rock, CO and Frederick, MD

There are
1,590 mi
from Castle Rock, CO to Frederick, MD

That's the driving distance. It would take 1 day 5 hours to go from Castle Rock, Colorado to Frederick, Maryland.

The flight distance (direct flight from Castle Rock, CO to Frederick, MD) is 1,459.77 mi.

1,590 mi = 2,559.49 kms