Long Point Key is an island in the middle Florida Keys.
U.S. 1 (or the Overseas Highway) traverses the key between Crawl Key and Fat Deer Key, which is part of a long stretch of road known as the Grassy Key Causeway.
It is entirely within the city of Marathon, Florida.
Coordinates: 24°44′52″N 80°59′14″W / 24.7479°N 80.9873°W