4.7
(7)
75
hikers
3
hikes
Mountaineering routes around Lac de Grand'Maison are set within the French Alps, specifically between the Belledonne and Grandes Rousses massifs. This region is characterized by its striking alpine landscape, significant elevation changes, and diverse terrain. The area features high-altitude environments, rugged mountain ranges, and various water bodies, including the artificial Lac de Grand'Maison reservoir.
Last updated: July 1, 2026
5.0
(2)
5
hikers
8.91km
04:21
590m
590m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
5
hikers
8.57km
03:33
710m
710m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
13
hikers
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.
14
hikers
19.5km
11:27
1,790m
1,790m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.0
(1)
2
hikers
21.2km
11:48
1,820m
1,820m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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The road is long but it's worth it.
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The descent from the Col du Glandon towards the north offers a striking view towards the valley, the Col de la Madeleine and the Mont Blanc massif.
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An ideal base for the Tour des Lacs des 7 Laux... Or for a break before heading back down
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A magical and exceptional site that absolutely must be preserved. Thank you for taking care of it.
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Access is via a very accessible path, 900 m from the last parking lot. You can also park in the parking lot just to the left of the departmental road, which is 1400 m from the path.
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At the pass, we find engraved markers indicating the border between France and the House of Savoy
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a beautiful, easily accessible and refreshing waterfall.
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There are 7 dedicated mountaineering routes around Lac de Grand'Maison, offering a range of experiences from moderate ascents to more challenging trails. These routes are set amidst the stunning alpine landscape of the French Alps, between the Belledonne and Grandes Rousses massifs.
The terrain around Lac de Grand'Maison is characterized by its striking alpine landscape, significant elevation changes, and diverse features. You'll encounter high-altitude environments, rugged mountain ranges, and various water bodies, including the expansive Lac de Grand'Maison itself, as well as other lakes like Lac de l'Âne and numerous streams and cascades.
Yes, several routes are designed as loops, allowing you to start and finish at the same point. For example, the difficult Lac de la Croix loop from Col du Glandon offers stunning views, or for a moderate option, consider the View of the Lake and Mountains loop from Vaujany.
The routes around Lac de Grand'Maison cater to various skill levels. You'll find 5 moderate routes that require good fitness and sure-footedness, and 2 difficult routes that demand alpine experience and a higher level of physical and technical condition due to significant elevation gains.
The region is rich in natural beauty and offers breathtaking panoramic views. You can expect to see the impressive Grand'Maison Dam, the waters of Lac de Grand'Maison mirroring the surrounding peaks, and other water bodies like Lac de l'Âne. From various vantage points, such as those near Col du Sabot or Col du Glandon, you'll get sweeping vistas of peaks like the Aiguilles de l'Argentière, the Rocher Blanc, and the Rocher Pilliozan.
While direct public transport to every trailhead might be limited, the region is accessible. For example, you can often find bus routes connecting larger towns like Grenoble to nearby villages such as Vaujany or Allemond, which can serve as starting points or provide access to the general area. From there, you might need to arrange local transport or hike to specific trailheads.
The mountaineering routes around Lac de Grand'Maison are highly regarded by the komoot community, holding an average rating of 4.6 out of 5 stars from over 10 reviews. Mountaineers often praise the spectacular mountain ranges, the diverse terrain, and the rewarding high-altitude environments.
Yes, the area features routes that traverse or offer views of the famous Col de la Croix de Fer. You can explore the moderate Col de la Croix de Fer (Iron Cross Pass) loop from Col de la Croix-de-Fer, which leads through high alpine terrain and provides excellent vistas of this iconic pass.
While popular routes like the Lac de la Croix loop attract many, exploring routes that start from slightly less central points, such as the moderate Col de la Croix de Fer (Iron Cross Pass) loop from Saint-Jean-d'Arves, might offer a more serene experience. The vastness of the Belledonne and Grandes Rousses massifs also provides ample opportunities to find quieter trails away from the main hubs.
The best time for mountaineering around Lac de Grand'Maison is typically during the late spring, summer, and early autumn months (June to September). During this period, snow has usually melted from lower and mid-altitudes, trails are more accessible, and the weather is generally more stable, offering ideal conditions for high-altitude exploration. Always check local weather and trail conditions before heading out.
Given the significant elevation changes and diverse terrain, it's essential to be well-prepared. For all routes, sturdy hiking boots with good ankle support are crucial. For more challenging trails, especially those requiring alpine experience, consider bringing trekking poles, appropriate layers of clothing for varying weather conditions, navigation tools, sufficient water, and high-energy snacks. Always check the specific requirements for your chosen route.


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