Saint Kitts (also known more formally as Saint Christopher Island (Saint-Christophe in French)) is an island in the West Indies. The west side of the island borders the Caribbean Sea, and the eastern coast faces the Atlantic Ocean. Saint Kitts and the neighbouring island of Nevis constitute one country: the Federation of Saint Kitts and Nevis.The island is one of the Leeward Islands in the Lesser Antilles. It is situated about 2,100 km (1,300 mi) southeast of Miami, Florida. The land area of St. Kitts is about 168 km2 (65 sq mi), being approximately 29 km (18 mi) long and on average about 8 km (5.0 mi) across.