Where is your starting point?
It also depends on your home port. For me, near the mouth of the Potomac River, the inside route is slightly shorter.
Going outside, it is 59 miles from Smith Point to Chesapeake Bay entrance, then 141 miles from the Chesapeake Bay entrance to Cape May, NJ, so 200 miles total.
Inside, it is 122 miles from the mouth of the Potomac to the east side of the C&D canal, and thence 64 miles to Cape May, NJ, or a total of 186 miles.
If you keep your boat north of the Potomac, it may be more advantageous to go through the canal and down the Delaware Bay. Plus, it is an interesting experience to transit the C&D Canal and sail in the Delaware Bay, instead of the Chesapeake.
I stopped in Ocean City, MD, in fair weather, and mine was the only sailboat in the marina. The inlet was easily navigated in good weather.
Last edited by jameswilson29; 11-15-2011 at 02:35 PM.