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France

Ile-de-France

Saulx Basin – Janvry Fountain loop from Palaiseau - Villebon

Routes

France

Ile-de-France

Saulx Basin – Janvry Fountain loop from Palaiseau - Villebon

Hard

3.3

(3)

riders

Saulx Basin – Janvry Fountain loop from Palaiseau - Villebon

03:10

48.2km

450m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 24, 2026

Tips

Includes a segment in which cycling is not permitted

After 38.5 km for 124 m

Waypoints

Start point

Train Station

Get Directions

4.03 km

Saulx Basin

Highlight • Lake

Open every day

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

10.9 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)

Translated by Google •

Tip by

29.6 km

Janvry Fountain

Highlight • Castle

Nice little village to see

Translated by Google •

Tip by

29.8 km

Janvry Castle

Highlight • Castle

Private castle; a pretty alley leads there.

Translated by Google •

Tip by

36.3 km

Fauvettes Viaduct

Highlight • Bridge

Magnificent viewpoint over the valley surrounded by greenery, accessible by "gravel" paths (roots and stones) through the wood or by "hiking / mountain biking" trails in the valley (it will …

Translated by Google •

Tip by

36.8 km

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

38.5 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 …

Translated by Google •

Tip by

42.3 km

Bassin du Belvédère

Lake

44.6 km

Parc intercommunal Eugène Chanlon

Forest

45.9 km

Bois de la Vauve

Forest

48.2 km

End point

Train Station

Way Types & Surfaces

Way Types

21.8 km

10.1 km

8.98 km

5.08 km

1.94 km

202 m

< 100 m

Surfaces

19.1 km

16.1 km

7.27 km

5.25 km

423 m

< 100 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

Thursday 3 September

27°C

16°C

0 %

Additional weather tips

Max wind speed: 22.0 km/h

to get more detailed weather forecasts along your route

Comments

February 23, 2025,Boucle Étang de Saulx-les-Chartreux – Viaduc des Fauvettes au départ de Palaiseau - Villebon

Be careful in the Janvry area in the forest, the route is almost impassable due to the mud and large pools of water. The wet winter, combined with the passage of quads and motocross has destroyed the trails.

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Saulx Basin – Janvry Fountain loop from Palaiseau - Villebon

Saulx Basin

View of the Petite Vallée

Descent of the Rocher de Saulx

Janvry Fountain

Janvry Castle

Fauvettes Viaduct

Montjay Tunnel

Grande Maison Park

Nearby routes

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