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Colle del Lys

Gressoney La Trinité

Monte Rosa

A mandatory step to access the highest 4000m in the region

Ski Touring Moderate

3.4 km
972 m
1 m
3-4 hrs
Low Point
3.3 km
High Point
4.2 km
Colle del Lys Map

This is a popular ski touring route which is generally considered to be moderate. It's extremely remote, it features medium exposure (e2) and is typically done between March and September. From a low point of 3.3 km to the maximum altitude of 4.2 km, the route covers 3.4 km, 972 vertical metres of ascent and 1 vertical metres of descent. It's graded 2.2 and Labande grade 3. You'll need rope, skins and crampons to complete it safely.


Colle del Lys is a mandatory place to reach in order to gain access to the main 4000m peaks in the area. This Colle divides Italy from Switzerland and just climbing it alone is a great adventure



Slopes become slightly steeper at around 25-30 degrees.

Medium Exposure (E2)

2 out of 4

As well as the slope itself, there are some obstacles (such as rock outcrops) which could aggravate injury.


4 out of 4

In the high mountains or remote conditions, all individuals must be completely autonomous in every situation.

Best time to visit

between March and September


  • Glacier
  • Walk Required

Equipment required

  • Rope
  • Skins
  • Crampons

Similar routes nearby

Guidebooks in this area