7. Bahia Honda State Park | Big Pine Key Twelve miles south of Marathon, this state park has turquoise water, balmy breezes and an endless supply of sunshine that would make Bahia Honda a great location for a five-star resort. Luckily for us, the land has been preserved for the public's use, giving regular folks an easy access point to the Florida Keys' world-famous coral reefs. The park three campgrounds. Call (305) 872-2353 or go to floridastateparks.org/bahiahonda.