Marathon

Marathon in Florida is a coastal city within the Florida Keys that serves as a gateway to the surrounding reef systems and shallow dive sites in the Gulf of Mexico and Atlantic coast. It offers access to countless dive centers and charters operating out of the island chain, with conditions typically warm, clear waters and abundant reef life, including soft corals, tropical fish, and occasional turtles. Local diving is structured around day trips to nearby reefs, wrecks, and drift dives, plus some freshwater options in the broader region for training. The city is a practical base for divers exploring the archipelago and Key West area, with a range of entry-level to advanced options via multiple operators.