On Thursday, 24 March 2016,
Does anyone know if the Graubunden Pass includes the SBB line from Landquart to Chur?
In a word , yes ,
from the RhB web site :
The graubündenPASS is valid in the Swiss canton of Graubünden on the networks of the Rhaetian Railway, the Swiss Federal Railways (SBB) and the Matterhorn Gotthard Bahn, on PostBus, Davos Transport Services (VBD), Engadin Bus, Chur town buses, Silvestri Bus Livigno, local buses in Klosters, Scuol and St. Moritz, and takes you up to lofty heights on the Rhäzüns-Feldis cable-car line.