Marathon Key is noted for its classic Keys culture and dramatic ecosystems that inspire marine-centric attractions like The Turtle Hospital and The Dolphin Research Center. Situated between Key West and Key Largo, Marathon is also home to the Seven Mile Bridge on the Overseas Highway, and a boating hub with multiple marinas, boat ramps. and homes with private docks. The waters surrounding Marathon and the Florida Keys host world-class fishing, underwater exploration, waterfront dining,...