The Marsh Railway (German: Marschbahn) is a main line in the state of Schleswig-Holstein in Germany that links the stations of Elmshorn in the south and Westerland on the island of Sylt in the north. It is part of 237 km (147 mi) long route from Hamburg-Altona to Westerland (Sylt) and is listed in the Deutsche Bahn timetables as Kursbuchstrecke 130. The first part of it was opened in 1845 and is one of the oldest lines in Germany.