Assuming that you are going to visit...Hwy 19 as well as 319 are very busy throughfares for trucks and other commercial vehicles as well as folks headed to Florida. I just went on Google Maps to see if there were any recommended/marked bicycle routes and nothing comes up. IDK what your normal rides look like as far as distance and speed. I would probably go somewhere like map my ride and see if you can't layout your own route on the back streets within the city limit. I would suggest looking at areas to cross the highways I reference rather than attempting to ride them.