Best mountain passes around Aillon-Le-Vieux are situated within the Massif des Bauges Regional Natural Park, a UNESCO Global Geopark. The region features diverse landscapes, including limestone cliffs, dense forests, and alpine pastures. These passes offer routes for both hikers and cyclists, providing access to the Bauges massif. Aillon-Le-Vieux serves as a starting point for exploring these mountain environments.
Last updated: May 29, 2026
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one of the gravel sections from Bauges to Annecy. Passes without any problem!
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Quiet little road to begin the ascent of the Col du Frêne. Very beautiful view.
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Very smooth, very good on mountain bikes and should do the job on gravel.
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Beautiful pass. The climb is a bit gentler from the north. The descent to the south offers beautiful views of the Isère Valley.
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From the centre of Chambéry, the climb of the pass starts at the exit of St Alban Leysse and is done very regularly crossing the villages of St Jean d'Arvey then Déserts where the view of the Margériaz will accompany you to the summit. Source: Chambéry mountains
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Col du Frêne from Saint Pierre d'Albigny is a climb in the Annecy region. It is 7.7 kilometres long and has a vertical ascent of 554 metres with an average gradient of 7.2%, implying a difficulty level of 483. The summit of the climb is located at 960 metres
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Beautiful mountain pass in the Bauges Massif on its very hard southern side with continuous gradients of 14% and a very broken track, recommended for mountain biking. Its northern side is easier but with gravel you may not be able to go down the south side well.
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Very nice pass; % real on the terminals. Hard but really quiet, because very few vehicles. Not very long either.
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Several mountain passes in the region are popular with cyclists. The Plainpalais Pass is well-regarded, with routes from Chambéry (16.2 km, 5.57% average gradient) or Lescheraines (11.4 km, 4.9% average gradient). Another excellent option is the Col du Frêne (950 m), offering a rewarding climb with beautiful views of the Combe de Savoie and the Dent d'Arclusaz. For a more challenging gravel or mountain biking experience, the Chérel Pass features an unpaved track towards the summit, ideal for off-road bikes.
Yes, for experienced hikers, the Cochette Pass (1,694 m) is a key point in challenging loops around Mont Colombier. A popular difficult hiking route is the Mont Colombier – Cochette Pass loop from Aillon-le-Vieux, spanning approximately 12 kilometers with significant elevation changes and panoramic views. You can find more challenging hiking routes in the area by exploring the Hiking around Aillon-Le-Vieux guide.
The mountain passes in the Massif des Bauges offer diverse and stunning views. From the Cochette Pass, you can admire the Bauges summits and the distant Belledonne mountain range. The Col du Frêne (950 m) provides views of the Combe de Savoie and the impressive Dent d’Arclusaz. The region itself is a UNESCO Global Geopark, characterized by limestone cliffs, dense forests, and alpine pastures, all contributing to the scenic panoramas.
Parking options are available at certain passes. For instance, you can park at the Col du Frêne (950 m), which serves as a convenient starting point for hiking or jogging. For other passes, it's advisable to check specific route descriptions or local signage for designated parking areas near trailheads.
The Massif des Bauges Regional Natural Park is a UNESCO Global Geopark, known for its diverse landscapes including limestone cliffs, dense forests, and alpine pastures. This geological richness provides a unique backdrop for exploring mountain passes, offering both challenging routes and breathtaking natural beauty. The passes provide access to the Bauges massif, with prominent peaks like Mont Colombier offering unparalleled 360° views.
Yes, the Chérel Pass is particularly suitable for mountain biking or gravel bikes. While the northern approach from Doussard has an asphalted section, the latter part of the climb towards the summit becomes an unpaved track. This long and challenging ascent covers nearly 16 kilometers with over 1,000 meters of elevation gain, offering a quiet ride through beautiful scenery.
Beyond exploring the passes themselves, the area offers a variety of outdoor activities. You can find numerous road cycling routes, such as the 'Col des Prés and Col de Plainpalais Loop' in the Road Cycling Routes around Aillon-Le-Vieux guide. For runners, there are challenging trails like the 'Mont Colombier – Cochette Pass loop' detailed in the Running Trails around Aillon-Le-Vieux guide. Hiking is also very popular, with routes like 'Colombier via la Fullie and Col de la Cochette Loop' available in the Hiking around Aillon-Le-Vieux guide.
The Marocaz Pass is noted for its climb with little car traffic, making it a pleasant experience for cyclists and hikers seeking tranquility. It's considered one of the most beautiful climbs in the region and provides a great access point to explore the Bauges massif.
Among the passes mentioned, the Cochette Pass is one of the highest, reaching an altitude of 1,694 meters. It offers extensive views of the Bauges summits and the distant Belledonne mountain range.
Absolutely. The Cochette Pass is often used as a gateway to Mont Colombier, the central and solitary peak of the 14 Bauges summits. From the pass, you can begin the ascent to Mont Colombier (2,043 m), which offers unparalleled 360° views across the Massif des Bauges, Mont Blanc, and Lac d'Annecy.
When cycling the Plainpalais Pass from Chambéry, the route is 16.2 km long with an average gradient of 5.57% and maximum gradients reaching 10.4%. The ascent from Lescheraines is 11.4 km long with an average gradient of 4.9%. Both approaches offer a good road quality and scenic panoramas.
Visitors frequently praise the stunning views, the challenging yet rewarding climbs, and the tranquility of many of the passes. For example, the Marocaz Pass is highlighted as one of the most beautiful climbs in the region with little car traffic. The panoramic vistas from passes like Cochette and Frêne are also highly appreciated by the komoot community.


See even more epic mountain passes by checking out these guides around Aillon-Le-Vieux: