Kurt's the one to ask(amongst others on this board). He just got back from that trip. Refer to: http://18.104.22.168/cgidir/ubbcgi/...&f=47&t=005875
I hear it's quite a beautiful trip when the weather is cooperating. On a clear day, when halfway there you can see both the Bahamas and FL at the same time. I believe it's just over 50 miles or so.