Best mountain passes around Chiomonte are located in the Susa Valley of Piedmont, Italy, offering access to high-altitude routes and historical points of interest. This region features diverse terrain, from paved roads to dirt tracks, and provides extensive panoramic views of the surrounding Alps. The area is known for its blend of natural beauty, challenging routes, and rich historical narratives, making it a destination for outdoor exploration.
Last updated: May 14, 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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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 Assietta hill is an Alpine pass located at 2,472 meters above sea level, between the upper Susa valley and the Chisone valley. The hill is within the Orsiera Rocciavrè natural park and can be reached from both sides via the entirely dirt road of the same name.
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Beautiful ride , however ,at least at the end of August 23 , the road in the last few kilometer is in bad conditions . A lot of stones make the ride difficult .I suggest of doing it by Mountain Bike rather than Gravel.
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Beyond the well-known Strada dell'Assietta and Colle dell'Assietta and Col du Sommeiller, the region offers the historic Chiomonte - Valeis - Frais - Gran Serin Route, popular for mountain biking and hiking, and the challenging hiking destination of Colle delle Vallette. You can also explore Cima Quattro Denti, which features the unique Pertus di Colombano Romean tunnel.
The terrain varies significantly. Routes like the Chiomonte - Valeis - Frais - Gran Serin Route transition from paved roads to dirt tracks, passing through larch forests and open pastures. Other areas, such as the ascent to Colle delle Vallette, involve steep sections and wide, panoramic slopes. The Col du Sommeiller Gravel Climb is particularly known for its exposed, rocky, and scree-filled sections.
Yes, the region is rich in history. Along the Gran Serin Route, you can find the remains of ancient fortifications at Punta del Gran Serin, dating back to 1890. The area of Cima Quattro Denti features the remarkable Pertus di Colombano Romean, a 16th-century hand-carved hydraulic tunnel. The Strada dell'Assietta itself is a historic military route.
Chiomonte is a great base for hiking. You can explore trails like the Cima Quattro Denti Trail, the CAI Trail 830 to Colle delle Vallette, and the Alpeggio Arguel – Lago di Gran Serin loop. For more options, check out the Hiking around Chiomonte guide.
Absolutely. Many routes, including the Chiomonte - Valeis - Frais - Gran Serin Route, are popular for mountain biking. The Col du Sommeiller Gravel Climb is a challenging destination for gravel and mountain bikers. The Strada dell'Assietta is also a fantastic dirt military road for gravel and mountain bikes. For road cycling, routes like the Colle delle Finestre Climb are nearby. Find more details in the Road Cycling Routes around Chiomonte guide.
The best time to visit is generally during the warmer months, from late spring to early autumn, when the passes are free of snow and weather conditions are more stable for outdoor activities. For specific historical sites like the Pertus di Colombano Romean, it's advisable to visit between August and November when water levels are lower.
While many routes are challenging, some sections or specific passes might be suitable for families. For example, Blegier Pass is categorized as family-friendly. Always check the specific trail difficulty and conditions before heading out with family.
Cima Quattro Denti, or 'Four Teeth,' is a distinctive peak offering expansive views over the Susa Valley. Its uniqueness is amplified by the nearby Pertus di Colombano Romean, a remarkable 433-meter hand-carved tunnel from the 16th century. This tunnel, excavated by a single miner, is a testament to historical engineering and willpower, with visible chisel marks and engravings inside. Waterproof shoes and a torch are recommended for exploring the Pertus.
Colle delle Vallette, at 2,303 meters, is a significant destination for hikers, linking the lower Susa Valley to the Val Sangone. The trails from Chiomonte or Pian del Frais are challenging, often involving steep sections through larch forests before opening up to panoramic slopes. It's part of the Orsiera - Rocciavrè Natural Park, offering magnificent natural scenery and views of both the Susa and Chisone Valleys.
Chiomonte itself offers various options for accommodation, cafes, and restaurants. Along some routes, like the Strada dell'Assietta, you might find refuges such as the Rifugio Casa Assietta, which is a great place to stop for food, drinks, or even an overnight stay.
Visitors frequently praise the spectacular panoramic views, especially from high-altitude points like the Col du Sommeiller and Cima Quattro Denti. The challenging yet rewarding nature of the routes, the blend of natural beauty with rich historical sites like the ancient fortifications and the Pertus tunnel, and the sense of accomplishment after tackling difficult climbs are also highly valued.


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