Britannica Sources used in this answer

Baltic Sea

How long is the Baltic Sea from eastern Denmark to southern Finland?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Map showing the physical features, major cities, and national boundaries around the Baltic Sea, North Sea, and English Channel regions of northern and western Europe. The map highlights coastal countries including the United Kingdom, Norway, Denmark, Germany, the Netherlands, Belgium, France, Sweden, Finland, Estonia, Latvia, Lithuania, Poland, and Russia, with sea depths indicated and key islands, peninsulas, and underwater trenches labeled. — Baltic Sea The Baltic Sea, the North Sea, and the English Channel.

The Baltic Sea extends a little more than 1,000 miles (1,600 km) along its major axis from eastern Denmark to southern Finland.1