The GoldenPass Line

Route : It connects Central Switzerland and Lake Geneva with an attractive train ride, the is as follows and vice versa: (Zurich –) Lucerne – Brünig Pass – Interlaken – Zweisimmen – Montreux (– Geneva). The best part being from Interlaken to Montreux.

Zürich to Luzern: Standard trains, run by Swiss Rail (2/hr, 1 hr). Luzern to Interlaken Ost: Narrow-gauge panoramic trains run by Brünig Railway (5/day, 2 hrs); also standard trains by Swiss Rail (hourly, 2 hrs).
Interlaken Ost to Zweisimmen: Direct panoramic trains run by Golden Pass (2/day, 1 hr); also standard trains run by Swiss Rail (at least hrly, 1.25 hrs, requires change in Spiez).
Zweisimmen to Montreux: Direct, narrow-gauge panoramic trains run by Golden Pass (5/day, 2 hrs); also standard trains run by Swiss Rail (9/day, 2 hrs).
Montreux to Geneva: Standard trains, run by Swiss Rail (hourly, 1 hr).

Planning Your Time:

As the trip has so much to offer in terms of main Swiss destinations (Zürich, Luzern, Interlaken, and Lake Geneva) the Golden Pass should be spliced cleverly to suit individual needs. Try to focus on the best stretch connecting Lake Geneva and Interlaken (3 hrs total, including the best segment between Montreux and Zweisimmen ).
However check schedules along the way and plan your layovers strategically to maximize time on the panoramic cars. For example, if traveling from Luzern to Lake Geneva, consider taking the 8:55 panoramic train from Luzern to Interlaken Ost (arriving 10:45), then wander in Interlaken and have lunch before catching the 13:25 panoramic train to Montreux (change trains in Zweisimmen at 14:23, arrive Montreux at 16:13).

Montbovon is the place to change trains if you’re going to Bulle or Gruyères. After the first tunnel, an inscription on the barn to the right welcomes the traveler in the Gruyère region: La Gruyère vous salue.

Montreux has the only train station in Europe with three different rail gauges: regular, narrow (which you’re on), and very skinny (for the Rochers de Naye train