Cape Cod Bay
Cape Cod Bay is a large bay of the Atlantic Ocean adjacent to the U.S. state of Massachusetts. Measuring 604 square miles below a line drawn from Brant Rock in Marshfield to Race Point in Provincetown, Massachusetts, it is enclosed by Cape Cod to the south and east, and Plymouth County, Massachusetts, to the west. To the north of Cape Cod Bay lie Massachusetts Bay and the Atlantic Ocean. Cape Cod Bay is the southernmost extremity of the Gulf of Maine. Cape Cod Bay is one of the bays adjacent to Massachusetts that give it the name Bay State. The others are Narragansett Bay, Buzzards Bay, and Massachusetts Bay.
Open Water Swimming
The Massachusetts Open Water Swimming Association sanctions a marathon swim between White Horse Beach, Plymouth and Herring Cove, Provincetown that was first crossed by Russell Chaffee on 14 August 1968 in 14 hours 40 minutes. Its record is currently held by Eliza Cummings set on 7 August 2016 in 9 hours 37 minutes 14 seconds.