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Vallée de la Mérantaise – View of the Petite Vallée loop from Longjumeau

Routes

Mountain biking trails

Vallée de la Mérantaise – View of the Petite Vallée loop from Longjumeau

Hard

5.0

(1)

riders

Vallée de la Mérantaise – View of the Petite Vallée loop from Longjumeau

04:19

53.5km

700m

Mountain biking

Hard mountain bike ride. 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: June 17, 2026

Tips

Cycling is not permitted along parts of this route

After 12.8 km for 186 m

After 36.4 km for 200 m

After 38.3 km for 257 m

After 46.3 km for 52 m

After 46.9 km for 91 m

Waypoints

Start point

Train Station

Get Directions

8.41 km

Les fossés du Grand Villefeu

Lake

10.5 km

Bois Persan

Forest

12.9 km

Lac du Mail

Lake

16.2 km

Technical Forest Singletrack

Highlight • Trail

Small, ultra-technical descent, with steps and rocks.

Translated by Google •

Tip by

20.7 km

Vallée de la Mérantaise

Highlight • Gorge

The Mérantaise Valley, near Villiers-le-Bâcle, is a veritable green haven in Île-de-France. The trail runs along the Mérantaise River, winding through dense forests, meadows and wetlands rich in biodiversity. It …

Translated by Google •

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22.2 km

Viewpoint

24.4 km

Abandoned Château in Parc Naturel Régional de la Haute Vallée de Chevreuse

Highlight • Castle

25.8 km

Réserve naturelle du val et coteau de Saint-Rémy

Nature Reserve

34.7 km

Montjay Tunnel

Highlight • Trail

Like the nearby Fauvettes viaduct, the Montjay tunnel once served as the old Paris-Chartres railway line. In the middle of the communal forest of Bures-sur-Yvette, it punctuates the straight and rolling line leading to the viaduct.

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36.4 km

Grande Maison Park

Highlight • Natural

This park owes its name to the bourgeois-style building present in the middle of its seven hectares of greenery. It is pleasant to run on its wide paths and along …

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41.2 km

Bois de la Grille Noire

Forest

41.5 km

Technical descent

Highlight (Segment) • Trail

47.9 km

Descent of the Rocher de Saulx

Highlight • Trail

Decent very nice with banked turns that zigzag on the way down.
to do by mountain bike - guaranteed sensation: o)

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48.3 km

View of the Petite Vallée

Highlight • Viewpoint

Nice view, near many small paths and single track.

Translated by Google •

Tip by

53.5 km

End point

Train Station

Way Types & Surfaces

Way Types

24.3 km

12.1 km

6.49 km

6.14 km

4.40 km

125 m

< 100 m

Surfaces

16.9 km

13.3 km

11.1 km

9.00 km

2.66 km

351 m

333 m

Elevation

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

Highest point (160 m)

Lowest point (40 m)

Weather

Monday 6 July

34°C

19°C

0 %

Additional weather tips

Max wind speed: 21.0 km/h

to get more detailed weather forecasts along your route

Comments

November 12, 2021,VTT club - Savigny à St Remy

Nice mountain bike outing on a fairly rolling course at the beginning and with some beautiful raidars. 😃
Release of recovery for a colleague of the club, he always has the legs and the mind the guy 💪🏻👍🏻

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Vallée de la Mérantaise – View of the Petite Vallée loop from Longjumeau

Technical Forest Singletrack

Vallée de la Mérantaise

Abandoned Château in Parc Naturel Régional de la Haute Vallée de Chevreuse

Montjay Tunnel

Grande Maison Park

Technical descent

Descent of the Rocher de Saulx

View of the Petite Vallée

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