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The Baden Mainline (German: Badische Hauptbahn) is a German railway line that was built between 1840 and 1863. It runs through Baden

Baden

Baden is a historical state on the east bank of the Rhine in the southwest of Germany, now the western part of the Baden-Württemberg of Germany....

, from Mannheim

Mannheim

Mannheim is a city in southwestern Germany. With about 315,000 inhabitants, Mannheim is the second-largest city in the Bundesland of Baden-Württemberg, following the capital city of Stuttgart....

 via Heidelberg

Heidelberg

-Early history:Between 600,000 and 200,000 years ago, "Heidelberg Man" died at nearby Mauer. His jaw bone was discovered in 1907; with scientific dating, his remains were determined to be the earliest evidence of human life in Europe. In the 5th century BC, a Celtic fortress of refuge and place of...

, Karlsruhe

Karlsruhe

The City of Karlsruhe is a city in the southwest of Germany, in the state of Baden-Württemberg, located near the French-German border.Karlsruhe was founded in 1715 as Karlsruhe Palace, when Germany was a series of principalities and city states...

, Offenburg

Offenburg

Offenburg is a city located in the state of Baden-Württemberg, Germany. With about 60,000 inhabitants, it is the largest city and the capital of the Ortenaukreis.Offenburg also houses University of Applied Sciences Offenburg...

, Freiburg

Freiburg

Freiburg im Breisgau is a city in Baden-Württemberg, Germany. In the extreme south-west of the country, it straddles the Dreisam river, at the foot of the Schlossberg. Historically, the city has acted as the hub of the Breisgau region on the western edge of the Black Forest in the Upper Rhine Plain...

, Basle, Waldshut

Waldshut

Waldshut is a district in the south of Baden-Württemberg, Germany. Neighbouring districts are Lörrach, Breisgau-Hochschwarzwald and Schwarzwald-Baar; followed in the south by the Swiss cantons of Schaffhausen, Zürich and Aargau.-History:The district dates to the Oberamt Waldshut, which was...

, Schaffhausen

Schaffhausen

Schaffhausen is a city in northern Switzerland and the capital of the canton of the same name; it has an estimated population of 34,587 ....

 and Singen

Singen

Singen is an industrial city in the very south of Baden-Württemberg in southern Germany and just north of the German-Swiss border.-Location:...

 to Konstanz

Konstanz

Konstanz is a university city with approximately 80,000 inhabitants located at the western end of Lake Constance in the south-west corner of Germany, bordering Switzerland. The city houses the University of Konstanz.-Location:...

. The Baden Mainline is 412.7 kilometres long, making it the longest route in the Deutsche Bahn

Deutsche Bahn

Deutsche Bahn AG is the German national railway company, a private joint stock company . Headquartered in Berlin, it came into existence in 1994 as the successor to the former state railways of Germany, the Deutsche Bundesbahn of West Germany and the Deutsche Reichsbahn of East Germany...

 network and also the oldest in southwest Germany. The section between Mannheim and Basle is the most important northern approach to the Swiss Alpine passes, whilst the section between Basle and Konstanz is only of regional significance. The stretch from Karlsruhe to Basle is also known as the Rhine Valley Railway (Rheintalbahn) and the Basle–Konstanz section as the Upper Rhine Railway

Upper Rhine Railway

The Upper Rhine Railway is the name given by the Deutsche Bahn to the 143 kilometre long railway line from Basel to Singen with timetable no. 730...

(Hochrheinstrecke).