Built in the 1850s, this is the longest bisse in Valais at 26 km. It is known as the king of the bisses.

Total length : 26 km. Count 32 km if you begin at the col des Planches.

Altitude : Between 1850 and 1500 metres.

Route time : Unless you are a very good walker, it is wise to plan two days for this walk.

Location :  Between La Boveresse (above Saxon) and Siviez (Nendaz), to the left of the Rhône.

Difficulty : No particular difficulty. In the first part after La Boversee until the La Tzoumaz the trail is very wild and receives few visitors. 

Ordinance Survey map 1 : 50'000  no. 282 T Martigny and 273T Montana.

Best period : From May to October.

This bisse contains water from the late May to mid-October.

Departure & Itinerary

To begin the bisse take a bus to the col des Planches. From there, make your way to the Lein Pass and take the non tarmac passable road as far as the first hairpin bend above La Boveresse. From here, the beginning of the Bisse de Saxon is sign-posted. If you plan to walk for two days you can stop overnight at La Tzoumaz or Nendaz Station. This bisse can be walked in the direction of Siviez, Haute Nendaz or Isérables or La Tzoumaz.

It is also possible to begin in Siviez (Nendaz) or at La Boveresse. During the walk you can reach Haute Nendaz, Isérables or La Tzoumaz. 

Enlarge and Print Itinerary

Interactive Map col des Planches

Interactive Map Le Levron

Public Transport Timetable (only in Summer)

Public Transport out off summer season

The section from Mayen de Riddes to Boveresses is less frequented. For this section of the walk, the difficult stretch can be avoided by taking a small detour. In so doing, you reach a magnificent clearing with a picnic place. There remain a few places where you need to be sure footed and have good walking boots.

Outside of the summer season, the route starts at Le Levron village because there is no public transport for the Col des Planches.

The post bus desert SIviez only during the high tourist season.

If you want to go to the Col des Planches during the summer season and during the week, it is better to book the Postbus.