It runs from Wolfratshausen via Höllriegelskreuth, central Munich, Höhenkirchen-Siegertsbrunn and Aying to Kreuzstraße.

Trains reverse in Munich East station and, in order for S-Bahn services from St.-Martin-Straße to be inserted into the S-Bahn line while simultaneously reversing to run into the S-Bahn tunnel under central Munich or vice versa, the line between Munich East station and the flying junction between München-Giesing and Fasangarten stations is one of the few in Germany that has traffic running on the left.

It is operated using class 423 four-car electrical multiple units, usually as two coupled sets.

In the evenings and on Sundays they generally run as single sets.

[9] Line took over the section of from Munich East to Kreuzstraße.