Map of the Upper Keys area: John Pennekamp Coral Reef State Park The first stop on the trip is John Pennekamp Coral Reef State Park located at Mile Marker 102.5 in Key Largo.

— -- The Florida Keys are about as far south as you can get in the Lower 48, but for second-home owners, their appeal has more to do with how far removed they are from contemporary culture ...

Although residents and business owners have been allowed to re-enter the upper Florida Keys following Hurricane Irma, access to the lower keys remains restricted south of Mile Marker 73.