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Routes
Bike touring routes & trails
France
Auvergne Rhône Alpes
Grenoble
Villard-Bonnot

Col de Porte (1326 m) – Col du Coq loop from Brignoud

Hard

4.7

(13)

408

riders

Col de Porte (1326 m) – Col du Coq loop from Brignoud

05:26

67.8km

1,940m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional de Chartreuse

Waypoints

A

Start point

Train Station

Get Directions

18.4 km

Viewpoint

Viewpoint

2

21.3 km

Vence Pass

Highlight • Mountain Pass

One of the most accessible passes from Grenoble. There are three possible access points: via the Col de Porte road (very busy, you constantly smell diesel...), via the Clémencières road (much quieter, a must), or via the small roads between La Tronche and Correnc, which lead directly to the pass via a final, abominably steep ramp.

Translated by Google •

Tip by

27.3 km

Col de Palaquit

Mountain Pass

4

29.7 km

Col de Porte (1326 m)

Highlight • Mountain Pass

The Col de Porte de Grenoble is 15 kilometers long with a total elevation gain of 1088 meters. The average slope is 7.2% with maximum slopes of 14.9%.

Translated by Google •

Tip by

5

48.2 km

Col du Coq

Highlight • Mountain Pass

- Don't be surprised: I created the highlight because the previous highlight was in the wrong place (not on the "real pass") -
The Col du Coq is the highest pass in the Chartreuse. From the north / west (St. Pierre) the road is in really bad condition (08/2020), there are some sections for which a gravel bike would be more suitable. Unfortunately, the worst part is also at the steepest (over 15%) point. The ascent from the north / west (I only drove this side) has two longer steep sections, but is otherwise easy to do. You shouldn't be surprised that shortly before the summit it goes downhill for a relatively long time, only to then climb again well. On the east side, you can either descend right into the valley (but be careful: very long, completely unlit tunnel on the descent !!) or to the left to the Petites Roches.

Translated by Google •

Tip by

6

52.7 km

A breathtaking view all the way down ... Don't forget to keep an eye on the road anyway;)

Translated by Google •

Tip by

7

66.5 km

Gravelroad next to the river

Highlight • Other

B

67.8 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

46.7 km

12.2 km

4.22 km

3.14 km

1.50 km

111 m

< 100 m

Surfaces

64.0 km

1.95 km

1.46 km

411 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.

Highest point (1,430 m)

Lowest point (220 m)

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Weather

Powered by Foreca

Tuesday 14 July

37°C

18°C

69 %

Additional weather tips

Max wind speed: 10.0 km/h

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