4.8
(9)
74
hikers
10
hikes
Mountaineering routes around Ornon are situated in the Oisans Valley of the French Alps, characterized by high mountain passes, glacial lakes, and challenging ascents. The terrain features a mix of rocky slopes, alpine meadows, and coniferous forests, offering diverse environments for mountaineers. Elevations vary significantly, with many routes leading to panoramic viewpoints over the surrounding peaks.
Last updated: July 1, 2026
5.0
(1)
16
hikers
10.2km
05:52
850m
850m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
11
hikers
13.3km
06:30
1,060m
1,060m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5.0
(1)
9
hikers
11.0km
04:02
470m
470m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
3.7
(3)
8
hikers
10.9km
06:27
1,180m
1,170m
Hard mountaineering route. Very good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(1)
6
hikers
16.7km
04:54
440m
440m
Moderate mountaineering route. Good fitness required. Mostly accessible paths. Sure-footedness required.
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The piste roundabout is a key point of the Alpe d’Huez resort. It is located at the start of several ski lifts.
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A busy hiking trail in summer. All those lakes and vistas are beautiful.
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A busy hiking trail in summer. All those lakes and vistas are beautiful.
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A busy hiking trail in summer. All those lakes and vistas are beautiful.
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Another of the lakes of the Huez Plateau.
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Beautiful glacial lake on a plateau above the Alpe d'Huez ski resort,
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The Robert Lakes are very beautiful, and the mountain range surrounding them creates a magnificent setting. The spot seems popular with campers (arrive early for the best spot). The GR trail between Chamrousse Le Recoin and the Robert Lakes, which passes by Lac des Prouettes, is quite difficult (steep) on the Robert Lakes side. The trail higher up the mountain is easier (beware of the scree slopes for those with short legs).
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There are 13 mountaineering routes detailed in this guide for the Ornon area. These routes offer a range of experiences, from moderate climbs to more challenging alpine ascents.
The mountaineering routes around Ornon are predominantly challenging. This guide features 3 moderate routes and 10 difficult routes, indicating that most trails require a good level of fitness and experience. The terrain often includes rocky slopes and significant elevation changes.
Yes, several routes around Ornon are designed as loops, allowing you to start and finish at the same point. For example, you can explore the Lake Lauvitel loop from La Danchère, the challenging Via Ferrata du Grand Bec – Lac de Brouffier loop from La Morte, or the extensive Lac de Prévourey loop from La Morte.
The routes around Ornon are rich in natural beauty. You'll encounter high mountain passes, pristine glacial lakes, and panoramic viewpoints. Notable features include Lake Lauvitel and Lake Achard. For stunning vistas, consider routes that pass by viewpoints like View of Chamrousse or lead to summits such as La Croix de Chamrousse Summit.
The mountaineering routes in Ornon are highly regarded by the komoot community, boasting an average rating of 4.8 out of 5 stars from 16 reviews. Over 100 mountaineers have used komoot to explore this area, often praising the challenging ascents, diverse alpine terrain, and the rewarding views of glacial lakes and mountain passes.
The duration of routes varies significantly based on difficulty and distance. For instance, the moderate Lake Lauvitel loop from La Danchère can be completed in about 3 hours 25 minutes. More challenging routes, like the Lac de Prévourey loop from La Morte, may take around 7 hours 20 minutes, while the Via Ferrata du Grand Bec – Lac de Brouffier loop from La Morte typically requires about 5 hours 52 minutes.
While the routes listed are popular for good reason, if you're seeking a potentially quieter experience, consider exploring the Chamrousse – Lake Pourettes loop from Chamrousse. It offers challenging terrain and beautiful lake views, and depending on the season, might be less frequented than some of the more central Ornon trails.
The best time for mountaineering in the Oisans Valley, where Ornon is located, is typically during the late spring, summer, and early autumn months (June to September). During this period, the weather is generally more stable, snow has melted from higher elevations, and trails are more accessible. Winter mountaineering is possible but requires specialized equipment and expertise due to snow, ice, and avalanche risks.
Yes, for those seeking an extra challenge and a unique experience, the Via Ferrata du Grand Bec – Lac de Brouffier loop from La Morte includes a via ferrata section. This route is rated as difficult and combines climbing with hiking, leading to the scenic Lac de Brouffier.
The terrain around Ornon is highly varied, characteristic of the French Alps. You'll encounter a mix of rocky slopes, high mountain passes, and alpine meadows. Some routes also traverse coniferous forests. Expect significant elevation changes and challenging footing, especially on the more difficult trails.
Yes, several routes provide stunning views of multiple alpine lakes. For instance, the Chamrousse – Lake Pourettes loop from Chamrousse offers picturesque lake scenery. Additionally, routes in the region often pass by or offer glimpses of beautiful bodies of water like Lake Lauvitel and Lake Achard.
Absolutely. The Col du Grand Van loop from Lac de Poursollet is an excellent option for experiencing a high mountain pass. This difficult route involves substantial elevation gain and offers the classic alpine experience of traversing a significant mountain pass.


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