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Mountain biking trails

Auvergne Rhône Alpes

Les Rochassons trail – Mount Mourex loop from Ornex

Mountain biking trails

Auvergne Rhône Alpes

Les Rochassons trail – Mount Mourex loop from Ornex

Moderate

5.0

(4)

31

riders

Les Rochassons trail – Mount Mourex loop from Ornex

02:38

33.7km

450m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 24, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional du Haut-Jura

Waypoints

A

Start point

Bus stop

1

7.77 km

Stone Bridge on the France–Switzerland Border

Highlight • Bridge

Superb course with clay

Translated by Google •

Tip by

2

13.9 km

Mont-Mussy

Highlight • Natural Monument

The Grande source and its streams gush out in a small wood at the foot of Mont-Mussy. They form the main source of La Divonne, a 22 km long river, which flows into Lake Geneva, in Switzerland, at Versoix.

Showing Translation

Tip by

3

14.0 km

Les Rochassons trail

Highlight • Other

Very nice ride. Access routes very nice and safe.
The way up to access Mont Mourex parking is a bit technical mainly because of round rocks but easily doable.
The …

Tip by

4

15.1 km

Mount Mourex

Highlight • Summit

With the Alps and Lake Geneva on one side and the Jura mountains on the other, Mont Mourex certainly offers breathtaking landscapes wherever you look!

Showing Translation

Tip by

5

15.7 km

Les Rochassons route

Highlight • Trail

Beautiful place, the short climb is worth it and is rewarded with a cool descent.

Translated by Google •

Tip by

B

33.7 km

End point

Bus stop

Way Types & Surfaces

Way Types

12.3 km

9.93 km

4.19 km

4.11 km

3.04 km

131 m

Surfaces

11.2 km

8.65 km

5.71 km

5.05 km

3.09 km

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Elevation

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

Highest point (750 m)

Lowest point (460 m)

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Weather

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Wednesday 14 October

22°C

8°C

-- %

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