Bosse Pass – Chablais Geopark loop from Les Cornettes de Bise

Hiking trails & Routes

France

Auvergne Rhône Alpes

Thonon-Les-Bains

La Chapelle-D'Abondance

Bosse Pass – Chablais Geopark loop from Les Cornettes de Bise

Hard

4.6

(25)

332

hikers

Bosse Pass – Chablais Geopark loop from Les Cornettes de Bise

05:30

10.3km

940m

Hiking

Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: August 6, 2026

Tips

Includes a segment that may be dangerous

A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.

After 1.80 km for 4.08 km

Waypoints

Start point

Parking

Get Directions

1.40 km

Bosse Pass

Highlight • Mountain Pass

The Pas de la Bosse is a pedestrian pass at 1,816 meters above sea level. It communicates the valley of Bise and the valley of Abondance.
Take the time to …

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1.75 km

At Pointe des Troisjeans

Highlight (Segment) • Other

We were doing the route counter-clockwise so this part was a descent for us. Really steep and exhausting. Possibly doing ascent here is easier.

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3.29 km

Hole in the mountain

Highlight • Other

A cool spot with a vertical cylindrical hole in the mountain. You can see the the ground hundreds of meters below through it. Looks amazing!

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3.65 km

Cornettes de Bise summit

Highlight • Summit

Wonderful view of Lake Geneva and the other direction to Mont Blanc. On the plaque of the summit cross is the sentence famous phrase by Antoine de Saint-Éxupéry: "On ne …

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4.14 km

Pas de Chaudin - Franco-Swiss

Highlight • Mountain Pass

Very beautiful pass, very frequented by ibexes. From here the climb to the Cornette de Bise is a little steep but without technical difficulty.

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7.58 km

Ugeon Pass

Highlight • Mountain Pass

From here you can either descend directly to the Refuge de Bise or continue the grade with great views to the Col de Bise, from where you can also descend again.

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9.89 km

Chablais Geopark

Highlight • Other

If the weather is good you can already see Mont Blanc in the distance!

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10.0 km

Refuge de Bise

Highlight • Mountain Hut

The view from the terrace is magnificent

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10.3 km

End point

Parking

Way Types & Surfaces

Way Types

5.68 km

4.26 km

235 m

< 100 m

Surfaces

5.37 km

4.26 km

382 m

235 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Tuesday 20 October

3°C

-2°C

-- %

Additional weather tips

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Comments

August 5, 2023,Boucle Franco-Suisse les Cornettes de Bises - Haut Chablais ♥️🇫🇷 🇨🇭

Fantastic hike today with lots of beautiful scenery (although clouds and fog didn't allow for really clear views and didn't allow for a lot of photos, but at the same time it gave an end of the day vibe very appreciable world). It's a Natura 2000 reserve and we met an incredible number of ibexes, I think I had never …

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July 4, 2026,Les Cornettes de Bises et la crête du Velan 🇨🇭🇫🇷

Fantastic day: ideal weather to do the mythical hike of Cornettes de Bises, a light North breeze refreshing the air in this period of almost heatwave, very clear weather, beautiful views and many ibexes in the distance. Technical and committed route in places, sublime! Hike done 3 years ago with little visibility, now we have seen it all!

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