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Mountain hikes & routes

France

Auvergne Rhône Alpes

Grenoble

Saint-Pierre-De-Chartreuse

Grand Som – Ruchère Pass loop from Monastère de la Grande-Chartreuse

Routes

Mountain hikes & routes

France

Auvergne Rhône Alpes

Grenoble

Saint-Pierre-De-Chartreuse

Grand Som – Ruchère Pass loop from Monastère de la Grande-Chartreuse

Hard

5.0

(1)

hikers

Grand Som – Ruchère Pass loop from Monastère de la Grande-Chartreuse

06:57

14.8km

1,140m

Mountaineering

Hard mountaineering route. 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: May 15, 2026

Tips

Includes segments that may be dangerous

Parts of this route comprise highly technical, difficult, or hazardous terrain. Specialist equipment and prior experience is required.

After 4.68 km for 230 m

After 5.47 km for 627 m

After 9.09 km for 32 m

Waypoints

Start point

Parking

Get Directions

555 m

Viewpoint

4.17 km

Col du Frenay

Mountain Pass

4.80 km

Pas de la Suiffière

Mountain Pass

5.95 km

Grand Som

Highlight • Summit

Culminating at 2,026 meters above sea level, the Grand Som is one of the emblematic peaks of the Chartreuse. Located in the heart of the massif, it offers a variety …

Translated by Google •

Tip by

7.82 km

Bovinant Pass

Highlight • Other

A crossroads perched at an altitude of 1,645 meters, you can observe the Col de Léchaud and Col du Frêt as well as Mount Outheran and the Bauges massif in the background.

Translated by Google •

Tip by

8.90 km

Pas du Loup (1560 m)

Highlight • Mountain Pass

Be careful, if in summer it is a fairly easy passage, in winter, as the surrounding slopes are steep, it is more prudent to have crampons

Translated by Google •

Tip by

9.37 km

Sous le Petit Som (1530m)

Highlight • Other

9.98 km

Ruchère Pass

Highlight • Mountain Pass

Also worth the climb if you do not continue to the Petit Som or the Grand Som. The view down the valley of Saint-Bruno, with the Charmant Som at the opposite side is pretty good.

Tip by

12.0 km

Direction sign

Highlight • Other

13.7 km

Vallon du Monastère Tree-Lined Path

Highlight • Trail

Magnificent avenue of century-old ash trees. Unfortunately, as of 2022, more than half of them had to be uprooted, almost 2/3 because of Asian fungi dating from 2008 which make …

Translated by Google •

Tip by

14.0 km

Water point

Highlight • Other

14.8 km

End point

Parking

Way Types & Surfaces

Way Types

6.93 km

3.04 km

3.03 km

1.57 km

224 m

Surfaces

4.36 km

4.35 km

3.97 km

2.04 km

< 100 m

Elevation

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

Highest point (1,970 m)

Lowest point (850 m)

Weather

Friday 3 July

24°C

11°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

to get more detailed weather forecasts along your route

Comments

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Grand Som – Ruchère Pass loop from Monastère de la Grande-Chartreuse

Grand Som

Bovinant Pass

Pas du Loup (1560 m)

Sous le Petit Som (1530m)

Ruchère Pass

Direction sign

Vallon du Monastère Tree-Lined Path

Water point

Nearby routes

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