S85 (Berlin)

S85 is a line on the Berlin S-Bahn. It operates from Grünau to Berlin-Pankow over:
 * the Berlin–Görlitz railway, opened on 13 September 1866 and electrified on 4 January 1929,
 * the Ringbahn, opened on 17 July 1871 and electrified in 1926 and
 * the Prussian Northern Railway, opened on 10 July 1877 and electrified in 1925.

Service history
The S85 was created on 2 June 1991, replacing the Brown route of the East Berlin S-Bahn between Buch and Spindlersfeld (via the eastern part of the Ringbahn).