Künzelsau is no longer connected to the railway network. The city had acquired a connection to the rail system in 1892. When the Royal Württemberg State Railways opened the Kocher Valley Railway from Waldenburg to Künzelsau, it also built a station in Haag with a type I entrance building. The line was extended to Forchtenberg in 1924, giving Nagelberg a railway connection. In 1981, passenger services to Hohenlohe were closed in 1991, and this was followed by total closure of the line. Much of the former railway line was converted to a paved bike path that leads up to the level of Hohenlohe. As the end of 2008, it was announced that reopening of the railway section between Künzelsau and Waldenburg was being examined as part of the Heilbronn Stadtbahn.</ref>