A further extension of the line was discussed. There were three variants: Reutte-Ehrwald-Gaistal-Leutasch, Reutte-Fern Pass-Imst (Fernbahn) or Reutte-Ehrwald-Garmisch. Because Garmisch already had a connexion to Munich at the time, a direct link from Munich to Innsbruck, and hence the development of the Außerfern region, suggested itself. The Mittenwald Railway from Garmisch to Innsbruck was opened in 1912 and the Garmisch-Reutte line on 29 May 1913. Both routes were electrified from the start.