Best mountain passes around Parco Naturale del Gran Bosco di Salbertrand are found in Italy's Piedmont region, within the upper Susa Valley. This protected area features a diverse alpine environment, ranging from 1,000 meters to 2,600 meters above sea level, known for its extensive mixed forests. The region is characterized by high-altitude passes and historic military roads, offering varied terrain for outdoor activities. Many trails lead to or traverse significant mountain passes, particularly along the historic Strada dell'Assietta, an ancient…
Last updated: July 10, 2026
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one of the many hills along the military road
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I'd been dreaming of being there for a long time, and I finally made it. It's a simply wonderful place. Words needn't be written. I climbed to the pass on its eastern slope, the one that starts from Pian dell'Alpe, and previously climbed Colle delle Finestre from Susa. Combining the two sections, I can assure you it's one of the toughest climbs I've ever done, but also one of the most beautiful. The section from Pian dell'Alpe to Colle della Assietta is divided into three parts: the first 4 kilometers of a steady climb at 6-7% gradient, the 2-kilometer intermediate rest stop, and the final 4 kilometers with steeper gradients and a worse track condition. I wholeheartedly invite you all to enjoy this wonderful place.
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Reachable from both Val Susa and Val Chisone. Wonderful views in any direction you decide to continue
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The Strada dell'Assietta is a high-altitude gravel road in the Italian Alps, climbing above 2,000 meters & spanning over 30 kilometers.
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A hill that goes up a forest road, sometimes rocky, goes up through the heart of the Great Forest in the Parco Naturale della Gran Bosco di Salbertrand (Natural Park of the Great Forest of Salbertrand) to the Col Blegier (pass). Because it is a forest road, the trail is not technically difficult, but there is 640 m (2,100 ft) of climbing in this 7.7 km
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Dirt road that can be traveled from Pian dell'Alpe to above Sestriere
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The Strada dell'Assietta, a former military road in the Cottian Alps, connects Val Chisone and Val di Susa. It starts from Pian dell'Alpe towards Sestriere, crossing breathtaking views over 2,000 m. Managed from Turin, it is only open in summer.
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The mountain passes in this region are deeply rooted in history, particularly along the Strada dell'Assietta. This ancient military road, which forms the southern boundary of the park, was the site of the significant Battle of Assietta in 1747. Colle dell'Assietta, a pivotal pass on this road, commemorates this event with an obelisk at Testa dell'Assietta.
For breathtaking panoramic views, Colle dell'Assietta provides expansive vistas of the surrounding Alps, including the Pelvoux massif and Mont Chaberton. Additionally, Col Basset, part of the Strada dell'Assietta, offers views stretching from Monte Chaberton to Seguret, encompassing Sestriere and Sauze d'Oulx.
Yes, the region is crisscrossed by a network of hiking trails. Many passes are integral to longer routes, such as the historic Strada dell'Assietta. You can find various hiking options, including the challenging Assietta Ridge Trail (Trail 712) or the moderate Gran Bosco Forest Trail. For more details on routes, visit the Hiking around Parco Naturale del Gran Bosco di Salbertrand guide.
Absolutely. The Strada dell'Assietta is particularly renowned as a challenging gravel road for cycling, offering a high-altitude experience. It's typically open from June 1 to October 31, weather permitting, and is closed to motorized traffic on Wednesdays and Saturdays during July and August, making it ideal for cyclists. Explore more cycling routes in the Cycling around Parco Naturale del Gran Bosco di Salbertrand guide.
The region boasts a diverse alpine environment. Near Blegier Pass, you can find the Torbiera del Blegier, a unique peat bog that supports important habitats and rare carnivorous plants. The area is also known for its extensive mixed forests of silver fir and spruce, and high-alpine landscapes with opportunities for wildlife spotting.
The best time to visit is generally from June 1 to October 31, when the high-altitude roads like the Strada dell'Assietta are typically open, weather permitting. This period offers the most favorable conditions for hiking and cycling, allowing access to the higher passes and their panoramic views.
While many passes, especially along the Strada dell'Assietta, can be challenging, Blegier Pass is noted as family-friendly. The park also offers easier hiking options, such as the Icehouse Lake and Ice House loop from Salbertrand. For more accessible routes, consult the Easy hikes around Parco Naturale del Gran Bosco di Salbertrand guide.
Yes, the high alpine areas, particularly around passes like Col Basset, are frequented by typical alpine mammals. You might spot deer, chamois, and roe deer, and occasionally even wolves, making it a rewarding experience for nature enthusiasts.
The Strada dell'Assietta is popular for its combination of historical significance, challenging terrain, and spectacular ridge-line views. It offers a continuous high-altitude traverse, connecting several passes like Colle dell'Assietta, Col Blegier, Colle Costa Piana, Colle Bourget, Col Basset, and Colle Lauson, providing an immersive high-alpine experience.
Yes, along the Strada dell'Assietta, the Casa Assietta Refuge near Colle dell'Assietta offers a place for rest and refreshments. It's a convenient stop for those traversing the challenging route.
The mountain passes in this region are found within an impressive altitude range. The park itself spans from 1,000 meters to 2,600 meters above sea level, with many passes, such as Colle dell'Assietta at 2,472 meters and Col Blegier at 2,381 meters, situated at high elevations.
Colle Lauson, located on the Assietta road, provides access to Lake Lauson or allows you to ascend Mount Gran Costa or Mount Blegier. It's a great starting point for further exploration into the high-alpine landscape.


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