The Fenêtre d'Arpette
The Fenêtre d'Arpette, located in the canton of Valais in Switzerland, is a mountain pass that provides a crossing between the Val de Trient to the northwest and the Val d'Arpette to the east. Nestled between the Pointe des Ecandies to the south and the Someceon du Dru and Genépi to the north, in the majestic Mont Blanc massif, this natural window stands at an altitude of 2 665 m8 743 ft.
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What you need to know
The ascent of this steep pass is a real challenge for hikers, especially those who choose to hike the Tour du Mont Blanc via this variant. The steep gradient of the pass, its high altitude, and the cumulative elevation gain of the stage can test even the most experienced hikers.
However, those who rise to the challenge are rewarded with breathtaking panoramic views, particularly of the Trient Glacier to the east and the Emosson dam and lake to the northwest.
The Fenêtre d'Arpette is therefore more than just a mountain pass - it is an unforgettable hiking experience that offers hikers a unique opportunity to connect with nature while testing their physical limits.
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Leaving Champex, you set off on a 6-kilometre ascent, climbing 1 100 m3 609 ft of elevation gain. This climb is a real challenge, with some sections leading to the Fenêtre d’Arpette that can be tricky and GR waymarks potentially difficult to spot. It is crucial to stay vigilant on the trail, to check the weather forecast carefully, and to assess the terrain conditions before committing. Some passages may still be snow-covered and become dangerous if the weather turns bad.
Once at the Fenêtre, take a moment to rest and appreciate your achievement. You then have a descent of about 4 kilometres with 1 000 m3 281 ft of elevation loss to tackle before reaching the Chalet des Glaciers. Here, you can reward yourself with a well-deserved cheese croûte and a cold beer.
After this revitalising break, you will begin a new ascent to the Col de la Balme - 2 kilometres with about 600 m1 969 ft of elevation gain. The panorama and the refuge here are splendid, and we recommend you take the time to enjoy them fully.
Finally, all that “remains” is 6 kilometres and 800 m2 625 ft of elevation loss to reach Tré le Champ. As always, make sure to book your accommodation for the night in advance, whether in a refuge or a bivouac spot, as these fill up quickly. The bivouac area is not the largest, so it is advisable to pitch your tents quickly. Once settled in, you can enjoy a wonderful meal at the inn and use the showers if you wish. This stage of the Tour du Mont Blanc offers a memorable hiking experience, with physical challenges, stunning panoramas, and well-deserved moments of relaxation.
Points of interest: Fenêtre d’Arpette, Col de la Balme
Where to sleep?
- Auberge de la Boerne in gîte
- Auberge de la Boerne in bivouac
Practical info
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"A complete and well-thought-out tour. The crossings between the three countries offer a unique cultural and scenic diversity. A must-do at least once in a lifetime."
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