The Florida Keys Overseas Heritage Trail Marathon boat ramp is located in Marathon, Florida, USA. It is a concrete boat ramp that provides access to the ocean. The ramp is approximately 20 feet wide and can accommodate small to medium-sized boats.

The Florida Keys Overseas Heritage Trail Marathon boat ramp services the Atlantic Ocean, specifically the waters surrounding the Florida Keys. This area is known for its clear blue waters and abundant marine life, making it a popular spot for recreational boating and fishing.

According to the latest information available, the Florida Keys Overseas Heritage Trail Marathon boat ramp allows for various types of watercraft, including motorboats, kayaks, and paddleboards. However, it should be noted that there may be specific regulations and restrictions in place for certain types of boats or activities in the area, so it is advisable to check with local authorities before using the ramp.