Wanderyn
Lake Thun
Photo: Wikimedia Commons
poi · CH

Lake Thun

Getting around: Lake Thun sits on the western side of Interlaken, with Interlaken West at its eastern tip. Boats (BLS) depart from Interlaken West for trips along the lake to Thun, Spiez and other towns; also served by train and road along the shore.
Hours: Accessible at all times along the public shoreline; boat cruises run on a seasonal daytime schedule, more frequent in summer.

Lake Thun is the larger and more developed of Interlaken's two lakes, ringed by lakeside towns, vineyards near Spiez, and several castles, with Thun itself anchoring the northern end. It has a slightly softer, more cultivated feel than Lake Brienz, with more agriculture and settlement along its shores.

A boat trip is the standard way to see it — the classic route runs between Interlaken and Thun, taking in views of the Niesen pyramid peak and the Bernese Oberland mountains reflected in the water, and it's a relaxing lower-key alternative on a day when you don't want to do a mountain excursion.

Lake Thun FAQs

Is Lake Thun bigger than Lake Brienz?

Yes, it's the larger of Interlaken's two lakes.

What towns are worth visiting along the shore?

Thun itself, with its own old town and castle, and Spiez, known for its vineyards and castle, are the main stops.

Is a boat trip a good way to spend a low-key day?

Yes, it's a relaxing alternative to the mountain excursions, with good views of the Niesen peak and Bernese Oberland mountains.

Can I swim in Lake Thun?

Yes, there are public swimming areas along the shore in summer.

How long is the boat trip from Interlaken to Thun?

Around two hours one way on the standard scenic route, though express connections are faster.

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