The Bayern Ticket is a Deutsche Bahn rail ticket which is valid for rail and bus travel throughout the whole of Bavaria. The ticket can be used between Monday to Friday from 9am until 3am the following day. On Saturdays and Sundays it can be used the entire day.
The Bayern Ticket is valid on all non-Intercity trains; in other words, on all RE, RB, IRE trains but not on IC, ICE or EC trains. It is additionally valid on all S-Bahn, U-Bahn, Tram and Bus routes throughout Bavaria, including the MVV in Munich. It is valid on virtually all rural bus services in Bavaria.
Train times can be found on the Deutsche Bahn website. Select "Only local transport" ("Nur Nahverkehr") to limit your search to trains on which the Bayern Ticket is valid.
The ticket is also valid as far as Salzburg and Kufstein in Austria and Ulm in Baden-Wuerttemberg. It is also valid on the Zugspitzbahn between Garmisch-Partenkirchen and Grainau, on the Lindau to Memmingen stretch via Kißlegg and on the Außerfernbahn between Garmisch-Partenkirchen and Kempten via Reutte. It can additionally be used to gain reduced admission at over 100 attractions in Bavaria.
At weekends, the Schönes Wochenende Ticket can be used for small-group travel throughout Germany. In Austria, the "Einfach Raus Ticket" is a similar offer, costing €28 for up to five people, again for use on regional trains after 9am or all day at weekends.