Florida Keys, Florida
Eventually, the Florida Keys Overseas Heritage Trail will run more than 106 miles along the islands that dangle in a languid curve from the southern tip of the Florida peninsula. The segments paved so far (around 61 miles) already provide the perfect way to explore this otherworldly place, so beautiful away from the souvenir shops and strip malls of U.S. 1. Bikers can view the graceful bridges built a century ago for the Florida East Coast Railway and even venture onto the Old Railroad Bridge, which leads to a railroad museum on Pigeon Key. They can poke around alongside the gorgeously blue-green water. On Big Pine Key, they might even see one of the endangered Key deer, a miniature subspecies about the size of a large German shepherd; 305/853-3571 or dep.state.fl.us/gwt/state/keystrail.