Being in Indiana, I concur with Aromig. Southern Indiana is a beautiful part of the state to ride in, but you do have to be cautious of your route for the reason she mentioned. There are some VERY hilly roads in that part of the state (a couple of counties are sometimes referred to as the "Little Smokey Mountains" for good reason) - though if you are doing tours every year I am sure you will be up for that. Also, think about dogs. I am sure this isn't a new consideration for you, but in some parts of Indiana the dogs do run free. In other parts of the state you can ride for miles on country roads without seeing a loose dog, it just depends on your location.