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Mountain biking trails

France

Ile-de-France

Palaiseau

Saint-Michel-Sur-Orge

View of the Château de Lormoy – View of the Petite Vallée loop from Saint-Michel-sur-Orge

Routes

Mountain biking trails

France

Ile-de-France

Palaiseau

Saint-Michel-Sur-Orge

View of the Château de Lormoy – View of the Petite Vallée loop from Saint-Michel-sur-Orge

Hard

4.4

(9)

riders

View of the Château de Lormoy – View of the Petite Vallée loop from Saint-Michel-sur-Orge

03:41

46.4km

600m

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: March 27, 2026

Tips

Cycling is not permitted along parts of this route

After 0 m for 271 m

After 46.3 km for 214 m

Waypoints

Start point

Train Station

Get Directions

1.39 km

L'Orge

Lake

1.80 km

Longpont Basin

Highlight • River

Hello everyone, be careful, several waypoints (notably 5) do not exist or no longer exist. I really struggle to follow this tour.

Translated by Google •

Tip by

1.96 km

View of the Château de Lormoy

Highlight • Viewpoint

5.91 km

Bois du Gros Chêne

Forest

7.01 km

Monsieur and Saint-Eloi Wood mountain bike playground

Highlight • Other

A real little Bike Park. It is managed by an association, a panel with the rules related to the place is present at the top of the slopes.

Translated by Google •

Tip by

10.3 km

View of the Petite Vallée

Highlight • Viewpoint

Nice view, near many small paths and single track.

Translated by Google •

Tip by

10.7 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)

Translated by Google •

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16.1 km

Les fossés du Grand Villefeu

Lake

18.2 km

Bois de la Grille Noire

Forest

19.8 km

Viewpoint

25.1 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.

Translated by Google •

Tip by

29.6 km

Janvry to St-Jean-de-Beauregard Trail

Highlight (Segment) • Trail

Very pleasant single despite the steep gravel climb at the level of the castle of St-Jean-de-Beauregard. In dry weather there is a short muddy section a bit before you cross …

Translated by Google •

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32.2 km

Janvry Animal Park

Highlight • Structure

Hens, llamas, warthogs. What to walk in the shade with family.

Translated by Google •

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46.4 km

End point

Train Station

Way Types & Surfaces

Way Types

18.1 km

13.7 km

7.04 km

5.18 km

2.10 km

317 m

Surfaces

13.1 km

8.49 km

7.71 km

3.22 km

531 m

261 m

Elevation

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

Highest point (170 m)

Lowest point (40 m)

Weather

Saturday 23 May

31°C

15°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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View of the Château de Lormoy – View of the Petite Vallée loop from Saint-Michel-sur-Orge

Longpont Basin

View of the Château de Lormoy

Monsieur and Saint-Eloi Wood mountain bike playground

View of the Petite Vallée

Descent of the Rocher de Saulx

Montjay Tunnel

Janvry to St-Jean-de-Beauregard Trail

Janvry Animal Park

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