Interlaken to St. Moritz Drive: Guide to the Ultimate Alpine Road Trip

The route from Interlaken to St. Moritz covers roughly 230 kilometers (143 miles) via the A8 and A13 highways, with an estimated driving time of 3 to 3.5 hours without stops. However, the panoramic passes and lakeside villages beg for longer exploration. Fun fact: the famous Bernina Pass on this route is one of the highest paved roads in the Alps and was featured in the movie 'The Italian Job.'

Before setting off, check local traffic apps for road conditions, especially in winter when the Susten Pass may be closed. The best time to drive is between May and October for clear passes and vibrant landscapes. For planning optimal stops, see how to find the best stops and hidden gems between cities.

Below is a quick overview of the route's key parameters:

Fuel stations are spaced roughly 40–50 kilometers along the A8 and A13, but the Susten Pass stretch has a 30-kilometer gap without services. Top up in Interlaken or Meiringen. Fuel costs approximately 1.80–2.00 CHF per liter for gasoline (95 octane). Considering the mountainous terrain with climbs and descent, fuel efficiency drops by 10–15% compared to flat driving; a standard sedan consumes about 8–9 L/100 km on this route.

Route economics: Toll vignettes are required for Swiss motorways (40 CHF annually). No additional tolls on Susten or Bernina passes. For EV drivers, charging points exist in Interlaken, Andermatt, and St. Moritz, but are sparse in between. Plan charging at restaurants or hotels.

Tractive effort: The Susten Pass (2224 m) and Bernina Pass (2328 m) require careful gearing. In winter, chains are mandatory. Night driving is possible but not recommended on passes due to limited illumination and wildlife (deer, chamois). Stick to daytime.

Road quality is excellent—tarmac is well-maintained, but narrow sections on passes require caution. Guardrails are present but stone walls can be unforgiving. Temperature fluctuates: at sea level in Interlaken 20°C, but on passes could be 12°C even in summer. Pack layers.

For families: the Trümmelbach Falls inside the mountain near Lauterbrunnen (short detour) is a hit. The Swiss Museum of Transport in Lucerne is 1 hour off-route but worth considering. For kids, the Ballenberg Open-Air Museum near Brienz is interactive with livestock and crafts.

Pet-friendly spots: Most outdoor restaurants along the route allow dogs. The Susten Pass viewpoint has a grass area for walks. The Hotel Weisses Kreuz in Meiringen permits dogs in rooms. Always carry water for pets, especially at high altitude.

Fatigue management: Plan rest stops every 2 hours. Ideal spots include the rest area at Göschenen (A2) or the Napf viewpoint on the Susten Pass. Both have scenic parking and are safe for a 20-minute nap. Never sleep in the car on a turnout—use a rest zone.

The drive transitions from the lush green valleys of the Bernese Oberland to the rugged, glacier-carved landscapes of the Engadin. The middle section along Lake Thun and Lake Brienz offers turquoise waters and waterfall views. The Susten Pass is a dramatic climb with switchbacks and views of the Sustenhorn.

Geographical shift: as you approach St. Moritz, the terrain becomes drier and more alpine, with the Engadin valley showcasing larch forests and the famous Lake St. Moritz. The area is home to several UNESCO World Heritage Sites, including the Rhaetian Railway (Albula/Bernina) and the Swiss Tectonic Arena Sardona (short detour).

Local commerce: Roadside stalls near Meiringen sell traditional wood carvings and Holzfäller shirts. In the Engadin, stop for Engadin Nusstorte (nut cake) and Bündner Gerstensuppe (barley soup). The village of Guarda (a short detour) has a weekend farmers' market with regional cheese and cured meats.