The Florida Straits, or the Florida Strait
or Straits of Florida
, is a strait located south-southeast of the North American mainland, generally accepted to be between the Gulf of Mexico and the Atlantic Ocean, and between the Florida Keys of the United States and Cuba. It is 90 miles wide at the narrowest point between Key West and the Cuban shore. The strait carries the Florida Current, the beginning of the Gulf Stream, from the Gulf of Mexico.
The boundary between the Exclusive Economic Zones of the US and Cuba is halfway between Cuba and Florida, as determined by a 1977 treaty between the US and Cuba.
It has been the site of many solo marathon swim attempts by reportedly over 20 individuals including Susie Maroney, Skip Storch and Diana Nyad between 1978 and the present.