Compared to Texas hill country, the Rockies, and the Alps, (I have cycled them all) north and central Florida are flat. I have cycled highway 90 twice. It goes west out of Jacksonville, FL and all the way across the top of the state to Alabama where its quality decreases significantly. 90 has many rises we can classify as hills. 90 is on the S-tier.
Florida west of Saint Augustine is flat. Central Florida can be rolling hills.
A map is a flat piece of paper. It cannot show you the reality of your road. Nor can it tell you what weather you will be having in this or that section of the country. A map may show you which roads go where, and elevations and other matters, but the differences of reality between a map and the terrain are far too great to rely only on map direction. Plans and times are tentative.
Whatever you ever do when cycling in Florida, DO NOT go any long distance on Highway 27/19/98 in winter. The traffic is completely out of it. It is a mad house, bedlam. Where there are side lanes for cycling they are so strewn and cluttered with debris, e.g., mufflers, rocks, gravel, pieces of wood, you have to get out in the traffic lane anyway. The traffic can seem more like a train than a series of separate vehicles. It is just a constant, annoying, din with large, extremely noisy trucks bearing down on you all day long. 27/19/98 may seem good on a map, running as it does roughly north and south in the middle of the state, but in winter it can be a corridor of hell for a cyclist.
Try riding in that kind of noise and pollution, and you will soon be looking for another way to go. I do not know of any official cycing routes that include 27/19/98.
This message was edited by Westinghouse on 10-27-08 @ 4:16 PM