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Mountain biking trails

Auvergne Rhône Alpes

Tournon-Sur-Rhône

Col du Gerbier de Jonc – Source de Loire loop from Saint-Martial

Mountain biking trails

Auvergne Rhône Alpes

Tournon-Sur-Rhône

Col du Gerbier de Jonc – Source de Loire loop from Saint-Martial

Moderate

4.3

(4)

17

riders

Col du Gerbier de Jonc – Source de Loire loop from Saint-Martial

02:16

23.4km

690m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 21, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional des Monts d'Ardèche

Waypoints

A

Start point

Parking

1

13.5 km

Col du Gerbier de Jonc

Highlight • Mountain Pass

The Col du Gerbier de Jonc from Saint-Martin-de-Valamas is 22.9 km long with a total drop of 885 m. The average gradient is 3.8% with maximum gradients of 8.3%.

Translated by Google •

Tip by

2

14.1 km

Source de Loire

Highlight • River

The official source of the Loire is Mont Gerbier-de-Jonc. This is the "true" source ...
Incidentally, each of the two sources also has its own restaurant 😃

Translated by Google •

Tip by

3

16.2 km

Viewpoint on Mont Gerbier de Jonc

Highlight • Viewpoint

A belvedere to admire Mont Gerbier-de-Jonc on the edge of the winding road that goes up from Saint-Martial.

Translated by Google •

Tip by

B

23.4 km

End point

Parking

Way Types & Surfaces

Way Types

12.4 km

7.81 km

3.07 km

182 m

Surfaces

7.81 km

7.37 km

5.01 km

3.07 km

182 m

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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

Saturday 10 October

14°C

5°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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