Difficulty
K4
Very difficult via ferrata
La Berneuse, Bergstation, VD
This K4 via ferrata climbs the exposed west face of the Tour d'Aï (2331 m) above Leysin.
Image: Daniel Anker
Difficulty
K4
Very difficult via ferrata
Current status
No reliable current status yet
Checked 2 h ago
Total time
3 h 20 min
Approach + via ferrata + descent
This K4 via ferrata climbs the exposed west face of the Tour d'Aï (2331 m) above Leysin, an area shaped by climbing pioneers like Dougal Haston and John Harlin. Expect a demanding, well-protected route with dramatic views over Lake Geneva and a slightly overhanging crux section. The full outing, including approach and descent, takes around 3½ hours.
Zoomable topographic map showing available approach, via ferrata, descent, start, finish, and parking geometry. The Download GPX link near the route map heading provides the same route geometry as a file.
Segment timings and vertical stats from the current VFOS dataset.
From the Berneuse gondola top station (2045 m), descend north to the chairlift base in a small basin (1905 m). Continue ahead, then left and zig-zag right past the chairlift up to a grassy ridge. Climb briefly before traversing right beneath the cliff to reach the via ferrata's start on the west face of the Tour d'Aï (about 2190 m).
The route follows the Voie des Vires, traversing ledges diagonally rightward before climbing through a chimney and a vertical to slightly overhanging wall. It then crosses a grassy band leftward and follows the ridge up to the summit of the Tour d'Aï (2331 m).
Descend the exposed, marked normal route along the southeast ridge, initially on its left side before following the narrowing arête, which broadens into grassy terrain. Continue down the grassy flank, bearing left above cliffs, then through a rocky gully. Turn right toward the Chalets d'Aï (1891 m), pass Lac d'Aï, and climb back up to Berneuse station. Alternatively, from Lac d'Aï, turn left and descend southwest, passing under the cable car to Le Temeley (1704 m) before zig-zagging through forest down to Leysin-Feydey.
No escape point details are recorded yet.
Typical published season
Plan around the trailhead, parking, and public transport links.
Last lift down
Check operator
VFOS editorial ratings on a 1-5 scale.
Variety
How much the route changes in movement and terrain.
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Complexity
Route-finding and technical problem-solving beyond pure grade.
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Beauty
Scenery, setting, and overall aesthetic quality.
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Exposure
Airiness and exposure independent of technical difficulty.
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Sustained effort
How continuous or relentless the physical effort feels.
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No crux tags are recorded yet.
Source ratings on the SAC-CAS 1-4 scale.

Check current local information before setting off.
In Switzerland, call Rega on 1414 for mountain rescue. European emergency number: 112.
Cell coverage can be patchy in gorges, valleys, and behind ridges. Download route notes and tell someone your plan.
This route is flagged as exposed or high-grade; avoid thunderstorms, wet cables, and fast-changing alpine weather.
https://www.alpesvaudoises.ch/en/P482/leysin/tour-dai-via-ferrata
Last scraped: 2 Aug 2026 · Opening-season source retained for status provenance.
https://www.sac-cas.ch/de/huetten-und-touren/sac-tourenportal/tour-dai-13/berg-und-alpinwandern/zustieg-via-ferrata-tour-dai-892/
Last scraped: 2 Aug 2026 · Official SAC-CAS Route Portal source; English API data and attribution retained.
https://www.sac-cas.ch/de/huetten-und-touren/sac-tourenportal/tour-dai-13/berg-und-alpinwandern/abstieg-via-ferrata-tour-dai-893/
Last scraped: 2 Aug 2026 · Official SAC-CAS Route Portal source; English API data and attribution retained.
https://www.sac-cas.ch/de/huetten-und-touren/sac-tourenportal/tour-dai-13/klettersteig/via-ferrata-tour-dai-717/
Last scraped: 2 Aug 2026 · Official SAC-CAS Route Portal source; English API data and attribution retained.
No contested fields are currently flagged.
Weather