You might think of Florida. There are some areas with good bike trails like the Withalacoochie Trail (sp?) which goes through Inverness, FL. Also in Florida, our rivers have water in them.
are there any hills? To me, nothing is more boring than a 30 mile flat ride - and I'm no animal. I'm curious because the wife and I are approaching snowbird status. I would love to live somewhere for 6-8 weeks in the middle of the winter to take a break from XC skiing and do some cycling.