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Mountain hikes & routes

France

Auvergne Rhône Alpes

Grenoble

Saint-Christophe-Sur-Guiers

Ruchère Pass – Grand Som loop from Chartreuse Regional Nature Park

Routes

Mountain hikes & routes

France

Auvergne Rhône Alpes

Grenoble

Saint-Christophe-Sur-Guiers

Ruchère Pass – Grand Som loop from Chartreuse Regional Nature Park

Hard

3.0

(2)

hikers

Ruchère Pass – Grand Som loop from Chartreuse Regional Nature Park

06:15

14.0km

1,020m

Mountaineering

Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is accessible with public transport.

Last updated: June 12, 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 3.78 km for 67 m

After 10.3 km for 32 m

Waypoints

Start point

Bus stop

Get Directions

2.73 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

3.34 km

Petit Som

Highlight • Summit

Magnificent summit above the Col de la Ruchère, offering you one of the most beautiful panoramas of the Chartreuse.

Translated by Google •

Tip by

4.26 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

6.70 km

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 of extraordinary views. It is possible to access it in a loop, but the round trip from the Col de Bonivant is more interesting for a trail outing.

Translated by Google •

Tip by

10.2 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

14.0 km

End point

Bus stop

Way Types & Surfaces

Way Types

7.04 km

3.47 km

2.06 km

1.40 km

Surfaces

7.04 km

5.53 km

1.40 km

Elevation

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

Weather

Saturday 27 June

36°C

17°C

0 %

Additional weather tips

Max wind speed: 6.0 km/h

to get more detailed weather forecasts along your route

Comments

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Ruchère Pass – Grand Som loop from Chartreuse Regional Nature Park

Ruchère Pass

Sous le Petit Som (1530m)

Petit Som

Col de Léchaud (1,704 m)

Bovinant Pass

Grand Som

Pas du Loup (1560 m)

Nearby routes

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