Take the Scenic Route and Discover Sanetsch Pass in Switzerland

Col du Sanetsch is a seriously impressive high mountain pass sitting pretty at 2,250m (7,381ft) in Switzerland's Valais canton. We're talking the southwestern part of the country, nestled in the western Bernese Alps right at the base of Glacier de Tzanfleuron. Fair warning though: this is a road reserved for buses and authorized vehicles only—private cars aren't allowed.

Starting from Conthey, the 25.9 km (16.09 miles) paved Route du Sanetsch is an absolute beast. The climb kicks off with a steep push through vineyards, then suddenly you're surrounded by gorgeous forest and cascading waterfalls. But here's where things get wild: the final stretch features a massive 800m tunnel that's genuinely creepy—pitch black with just tiny light sensors guiding you through. It's long, damp, and kind of unsettling, though there are a few openings where you can catch glimpses of the landscape or catch your breath.

This isn't your average climb. Locals proudly call it the Swiss answer to the legendary Passo Stelvio, and for good reason. Some sections hit a punishing 14.5% gradient, making it one of Valais's most demanding routes. Plan on 45 to 60 minutes of driving time without stops.

The pass only opens June through September, so timing matters. Once you reach the summit, there's a huge parking lot waiting, but brace yourself—the wind up there is absolutely relentless. On a clear day, you'll catch stunning views of the Diableret glacier and the sparkling Lac de Sanetsch below. Absolutely worth the climb.