Best mountain passes around Léoncel are found in the Drôme department of southeastern France, offering access to notable routes. The region features diverse geographical formations, including the Vercors massif. These passes are characterized by their unique natural landscapes and varied terrain. The area provides routes that traverse elevations and showcase the natural environment of the Drôme region.
Last updated: October 13, 2026
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Beautiful climb from the campsite Valle drome soleil via the D93 to the D70 to then cycle towards the climb, 13.5 km extra then. Done in the morning because it got way too hot in the afternoon. Beautiful ride and the same way back a reward
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Prepare to experience one of the most spectacular and exciting road routes in Europe! The Combe Laval road, nestled in the Vercors massif, is a true engineering masterpiece of the 19th century. Also known as the "road of dizziness," it winds for about 4 kilometers literally carved into the limestone rock, offering passages through suggestive tunnels and natural balconies with breathtaking drops that will take your breath away.
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La Combe Laval is one of the most spectacular scenic roads in the Vercors massif. The D76 was carved into the rock face between the 19th and 20th centuries and passes through a succession of tunnels, ledges, and sections suspended over the valley.
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Here is the route for the ascent of the Col de la Machine starting from Saint-Jean-en-Royans, which passes through the incredible Combe Laval!
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After a long section of "classic" pass, we suddenly find ourselves on the side of a cliff with a majestic view 😍. The valley is not very long but magnificent. Many nooks and crannies to stop and take a photo.
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Gentle climb. Wine in the bottle for the Bacchus Pass!
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This mountain pass is named after one of the great aviation pioneers of France. There are several ways to reach this pass, but whichever you choose, you will always have a beautiful view from this place.
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A fairly demanding pass at first, but it eventually eases off as the scenery becomes incredible! 6 km at 8%, then 6%, 4%, 5% (not sure, I was just looking at the scenery) and the last two km at 4%.
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The region is renowned for its exceptional panoramas. The Machine Pass and the Combe Laval Cirque offer dramatic, majestic views of the Vercors massif and the valleys below. The road through Combe Laval is a scenic wonder, carved into cliffs, providing breathtaking vistas.
Yes, the Ascent to the Col de la Machine is particularly popular among cyclists for its unique landscape and challenging sections. Starting from Saint-Jean-en-Royans, it features a raised balcony road, tunnels, and breathtaking views, with sections clinging to cliff sides.
You'll encounter stunning natural environments, including the dramatic geological formations of the Vercors massif. The Combe Laval Cirque, for instance, is a veritable cornice carved into the rock, showcasing impressive limestone escarpments and diverse landscapes.
The Jérôme Cavalli Pass, 842 m, offers a moderate challenge. It extends over 9 kilometers with a positive elevation gain of 486 meters and features slopes of up to 6%, making it a good 'warm-up' before tackling steeper passes in the area. It also has beautiful views and typically little traffic.
Yes, the Col de la Croix (746 m) is a nice pass that allows you to avoid the main road from the Crest valley to Die. It's very little used by cars and offers superb views of the Vercors.
The region offers a variety of outdoor activities. You can explore numerous MTB Trails, enjoy scenic Road Cycling Routes, or go for invigorating Running Trails. Many routes incorporate the mountain passes, offering diverse terrain and stunning views.
Visitors frequently praise the spectacular panoramas and the unique driving or cycling experience. The roads carved into cliff sides, like those found in Combe Laval, are often highlighted for their breathtaking views and the overall impression they give of the Vercors massif's natural environment.
The Jérôme Cavalli Pass, 842 m, is named after one of France's great aviation pioneers, adding a touch of historical significance to its scenic beauty.
While specific seasonal conditions vary, the region's passes are generally best enjoyed during warmer months when roads are clear of snow and ice, allowing for optimal cycling and driving conditions to appreciate the panoramic views. Spring and autumn offer pleasant temperatures and vibrant landscapes.
Cyclists often recommend starting the ascent to the Col de la Machine from Saint-Jean-en-Royans for the most spectacular experience through Combe Laval. Be prepared for sections clinging to cliff sides and numerous spots perfect for photographs. It's an unmissable part of the Vercors region for road cyclists.


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