<P> Both the longest and the largest island in the contiguous United States , Long Island extends 118 miles ( 190 km ) eastward from New York Harbor to Montauk Point , with a maximum north - to - south distance of 23 miles ( 37 km ) between Long Island Sound and the Atlantic coast . With a land area of 1,401 square miles ( 3,630 km ) , Long Island is the 11th - largest island in the United States and the 149th - largest island in the world -- larger than the 1,214 square miles ( 3,140 km ) of the smallest U.S. state , Rhode Island . </P>
<P> Both the longest and the largest island in the contiguous United States , Long Island extends 118 miles ( 190 km ) eastward from New York Harbor to Montauk Point , with a maximum north - to - south distance of 23 miles ( 37 km ) between Long Island Sound and the Atlantic coast . With a land area of 1,401 square miles ( 3,630 km ) , Long Island is the 11th - largest island in the United States and the 149th - largest island in the world -- larger than the 1,214 square miles ( 3,140 km ) of the smallest U.S. state , Rhode Island . </P>
how long is long island from east to west
how long is long island from east to west
118 miles ( 190 km )
118 miles ( 190 km )