Interlaken Ost is a straightforward, compact station that serves as the essential gateway to the Bernese Oberland. Despite its importance as a tourism hub, it is a relatively small facility featuring 8 platforms across 3 island platforms. Think of the station as a simple, efficient transit bridge: it is a dead-end terminus for all passenger services, meaning every train that arrives here eventually stops and reverses or terminates, making it impossible to "miss" your stop by traveling through the station.
The station’s layout is designed for easy cross-platform transfers. Because it is a terminus, you will often find your connecting mountain train waiting at the same island platform or just a short walk away through the underpass. The platforms are numbered 1 through 8. Standard-gauge trains arriving from Bern or Spiez typically use platforms 5 through 8, while narrow-gauge regional services, including the Berner Oberland Railway (BOB) trains bound for Lauterbrunnen and Grindelwald, generally use platforms 1 through 4.
Navigating the station is intuitive. If you arrive on a mainline train and need to transfer to a mountain service, you will likely need to move between platforms. While there are stairs, the station is fully equipped with ramps and elevators, making it very manageable even with heavy luggage. A common point of confusion for first-timers is the BOB train to Lauterbrunnen and Grindelwald; this train splits at the town of Zweilütschinen. Always check the carriage destination displayed on the platform or the side of the train to ensure you are boarding the correct section.
Given the small size of the station, you do not need to worry about long distances. A transfer between the most extreme platforms will take you no more than 3 to 5 minutes at a leisurely pace. If your connection is tight, do not panic—Swiss rail transfers are designed to be efficient, and the station staff and conductors are accustomed to assisting tourists with luggage. Simply follow the clear overhead signage, utilize the underpass, and remember that for mountain-bound services, the correct carriage is just as important as the correct platform.