Coastline Lengths - world statistics and charts as map, diagram and table. The length of the coast for the countries of the world. No information is available for non-listed countries. The above figures give the total length of the boundary between the land area (including islands) and the sea. The coastlines of the military bases Akrotiri, Dhekelia and Guantanamo Bay are not listed. 1 km corresponds to 0.6214 miles. Source: CIA World Factbook (2017-01-17)