Before 2017, the municipality was located in the Disentis sub-district of the Surselva district, after 2017 it was part of the Surselva Region. It is located at the entrance to the Oberalp Pass and at the source of the Vorderrhein river. It consists of the village of Sedrun, the sections of Tschamut, Selva, Rueras/Dieni, Camischolas/Zarcuns, Gonda and Bugnei on the left bank of the Vorderrhein, and on the right bank are the settlements of Surrein and Cavorgia. Until 1920 there was no direct route between the village halves on each bank of the Vorderrhein. Until 1976 Tujetsch was known as Tavetsch.