Take the train to Chur, then take the PostBus no. 81 in the direction Laax/Falera, to the stop ‘Trin Dorf’. It is around 100 m from the bus stop.
Trin Youth Hostel has two parking spaces (only to unload). There is a paid car park under the village square in Trin village. Some free parking spaces are available at the entrance/exit to Trin village.