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Hiking trails & Routes
France
Auvergne Rhône Alpes
Grenoble
Saint-Ismier

Large Rock loop from Saint-Ismier

Moderate

5.0

(1)

25

hikers

Large Rock loop from Saint-Ismier

02:52

7.41km

440m

Hiking

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required. The starting point of the route is accessible with public transport.

Last updated: June 18, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional de Chartreuse

Waypoints

A

Start point

Bus stop

Get Directions

1

2.84 km

Tour d'Arces and View of the Grésivaudan Valley

Highlight • Castle

The tower of Arces was once the keep of a fortified castle. Built between the 12th and 13th centuries, this castle made it possible to monitor the Grésivaudan valley.

Translated by Google •

Tip by

2

3.58 km

Large Rock

Highlight • Natural Monument

It is, as its name suggests, a big stone! This rather huge rock is quite curious. It is worth the detour!

Translated by Google •

Tip by

3

4.43 km

Beautiful view from Pierre Grosse Marie

Highlight • Natural Monument

Very beautiful view of the valley and the Belledonne massif

Translated by Google •

Tip by

4

4.67 km

Pleasant and relaxing view of the balconies of Belledonne and the valley of Grésivaudan

Translated by Google •

Tip by

B

7.41 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

2.95 km

2.44 km

1.99 km

< 100 m

< 100 m

Surfaces

2.22 km

2.18 km

1.93 km

692 m

235 m

< 100 m

< 100 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Wednesday 1 July

23°C

11°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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