I don’t believe there is a length limit in Sumter county. You are required to have your pet “in control” or it is considered to be “at large” and no mention of leashes at all that I can see in the actual code. Can you really be in control if your pet is 25 feet away? I have my doubts. With the oodles of liability lawyers chomping at the bit in Florida, I would not want to try and convince a judge or civil court jury of that.