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Routes
Mountain biking trails
France
Auvergne Rhône Alpes
Grenoble
Jarrie

Hertzian Tower – Crête de Brie loop from Jarrie-Vizille

Routes
Mountain biking trails
France
Auvergne Rhône Alpes
Grenoble
Jarrie

Hertzian Tower – Crête de Brie loop from Jarrie-Vizille

Hard

4.0

(13)

116

riders

Hertzian Tower – Crête de Brie loop from Jarrie-Vizille

05:59

53.9km

1,810m

Mountain biking

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is accessible with public transport.

Last updated: March 21, 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 17.3 km for 18 m

After 17.4 km for 18 m

After 39.9 km for 47 m

Waypoints

A

Start point

Train Station

Get Directions

1

6.35 km

Hertzian Tower

Highlight • Monument

12.0 km

Viewpoint

Viewpoint

14.7 km

Le Verderet

Lake

17.3 km

Bois de Jaillot

Forest

22.3 km

Ruins

Ruins

6

26.1 km

Chemin du Bois du Fournet

Highlight • Other

A good single, not too technical.

Translated by Google •

Tip by

7

35.3 km

This mountain is Chamechaude

Highlight • Other

the path being easy, we raise our noses and admire the Chartreuse.

Translated by Google •

Tip by

8

37.3 km

Crête de Brie

Highlight (Segment) • Trail

the beginning of the track is in rock with fairly high steps, without major difficulties in summer in dry weather, more technical when very wet

Translated by Google •

Tip by

44.1 km

Bois de Lauzet

Forest

10

45.5 km

Bellevue

Highlight • Viewpoint

11

49.6 km

From the heights overlooking Montchaboud, the view is simply magnificent. This small village in Isère, nestled in the heart of lush greenery, reveals itself with its traditional houses and fields …

Translated by Google •

Tip by

B

53.9 km

End point

Train Station

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Way Types & Surfaces

Way Types

29.7 km

11.3 km

7.03 km

4.31 km

1.36 km

219 m

Surfaces

25.0 km

12.3 km

7.23 km

6.28 km

1.59 km

1.37 km

< 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.

Highest point (880 m)

Lowest point (240 m)

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Weather

Powered by Foreca

Sunday 10 May

17°C

10°C

99 %

Additional weather tips

Max wind speed: 5.0 km/h

to get more detailed weather forecasts along your route

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

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