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Routes
Mountain biking trails
France
Bourgogne-Franche-Comté
Lons-Le-Saunier
Chaux-Des-Crotenay

Tunnel de 180 m de long sur la Tramjurasienne editorial name for French users – The ghost tunnel! loop from Chaux-des-Crotenay

Routes
Mountain biking trails
France
Bourgogne-Franche-Comté
Lons-Le-Saunier
Chaux-Des-Crotenay

Tunnel de 180 m de long sur la Tramjurasienne editorial name for French users – The ghost tunnel! loop from Chaux-des-Crotenay

Moderate

5.0

(2)

24

riders

Tunnel de 180 m de long sur la Tramjurasienne editorial name for French users – The ghost tunnel! loop from Chaux-des-Crotenay

02:16

28.0km

460m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Last updated: July 15, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional du Haut-Jura

Waypoints

A

Start point

Get Directions

1

3.98 km

Saine River Waterfalls

Highlight • Waterfall

Awesome waterfalls in a very deep gorge. Follow the trail to get closer to the beginning of the waterfalls.

Tip by

2

5.38 km

La Saine

Highlight • Other

Confluence of the Ruisseau d'Entre Côtes stream into the course of La Saine.

Translated by Google •

Tip by

3

6.00 km

Bief de la Ruine Waterfalls

Highlight • Waterfall

The Bief de la Ruine waterfall is located in the spectacular Malvaux Gorge. One of the most astonishing features of this waterfall is the fact that it only comes alive …

Translated by Google •

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4

6.21 km

Tunnel de 180 m de long sur la Tramjurasienne editorial name for French users

Highlight (Segment) • Other

A former, unlit railway tunnel with a length of 180 meters. A flashlight is extremely helpful here, as there are quite large stones in some places that are invisible in the dark.

Translated by Google •

Tip by

5

6.48 km

Bief de la Ruine Tunnel

Highlight • Structure

180 m long tunnel through the mountain, requiring a flashlight.

Translated by Google •

Tip by

6

6.58 km

The ghost tunnel!

Highlight • Other

180m long. Don't forget your light.

Tip by

7

14.9 km

Lac-des-Rouges-Truites peat bog

Highlight • Other

Heir to the glaciers that covered the Jura ten thousand years ago, leaving moraines with impermeable bottoms, a peat bog is formed when these bottoms fill with stagnant water, populated …

Translated by Google •

Tip by

8

17.8 km

Singletrack in Parc naturel régional du Haut-Jura

Highlight • Trail

A beautiful single trail that is part of the GTJ.

Translated by Google •

Tip by

B

28.0 km

End point

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Way Types & Surfaces

Way Types

13.8 km

12.1 km

1.96 km

178 m

< 100 m

Surfaces

11.3 km

10.6 km

3.23 km

2.66 km

254 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 (950 m)

Lowest point (670 m)

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Weather

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Saturday 18 July

25°C

9°C

-- %

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