Naharlagun Railway Station is the last train station of Arunachal Pradesh, and it is the main station to enter Itanagar and Naharlagun, if you are planning to visit twin Capital Capital of Arunachal Pradesh Itanagar and Naharlagun then the best way is by train and the last stoppeged is Naharlagun Railway Station, Later you can go to Itanagar by taxi or bus.

And If you want to go to Tawang then you have to get down at Rangapada Railway station and from Rangapara you have to go to Tezpur which is 25 km, After that you can go to Tawang by Sumo Service or Bus. Connectivity from Tezpur to Tawang is very good with buses and sumo service.