Once you arrive in the keys, you may not need a car. 300 Grinnell Street in Old Town. You'll do and see more on foot. By Sea Sail through America's Caribbean. All channels are well-marked.
Marinas abound and dock space is readily available.
A Marker for Every Mile Down here in the Keys, the Overseas Highway is like our Main Street. And the best way to get around is to know the mile marker of your destination. These little green signs that dot our highway every mile begin just south of Florida City with number 127 and run all the way down to zero in Key West. They're like our addresses. If you know the mile marker of where you're going, getting there is easy.