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France

Ile-de-France

Palaiseau

Sainte-Geneviève-Des-Bois

View of the Petite Vallée – Descent of the Rocher de Saulx loop from Sainte-Geneviève-des-Bois

Routes

Mountain biking trails

France

Ile-de-France

Palaiseau

Sainte-Geneviève-Des-Bois

View of the Petite Vallée – Descent of the Rocher de Saulx loop from Sainte-Geneviève-des-Bois

Moderate

4.0

(21)

165

riders

View of the Petite Vallée – Descent of the Rocher de Saulx loop from Sainte-Geneviève-des-Bois

03:41

49.1km

530m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: July 17, 2026

Tips

Cycling is not permitted along parts of this route

After 29.5 km for 65 m

After 33.4 km for 221 m

After 48.9 km for 219 m

Waypoints

Start point

Train Station

Get Directions

4.43 km

Bois de Sillery

Forest

5.45 km

Bassin de Balizy

Lake

12.0 km

View of the Petite Vallée

Highlight • Viewpoint

Nice view, near many small paths and single track.

Translated by Google •

Tip by

12.4 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

17.6 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

25.1 km

Fast Singletrack Trail

Highlight • Trail

Super little single that spins and zigzags simple fast fun and a little walk at the end just to add some pep!

Translated by Google •

Tip by

26.7 km

Les Arrachis

Highlight • Trail

A nice short climb slightly zigzag, it is quite steep but nice and allows you to do a nice descent and single just after.

Translated by Google •

Tip by

31.1 km

Côte de l'Escargot

Highlight (Segment) • Climb

The climb to the Col de l'Escargot or just "l'Escargot" is indeed a classic of the area, it climbs for around 0.5km with an average of 8 or 9%
This …

Translated by Google •

Tip by

33.5 km

Bassin Sec du Mort Rû

Lake

34.8 km

Bois du Gros Chêne

Forest

49.1 km

End point

Train Station

Way Types & Surfaces

Way Types

19.8 km

10.1 km

8.77 km

6.93 km

3.21 km

246 m

Surfaces

14.6 km

10.5 km

10.0 km

7.44 km

5.32 km

960 m

154 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 10 August

33°C

19°C

0 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

Comments

March 25, 2022,YO 45 en mode cool 😎 🍺 ☀️

VRTT, a day off as we like them!
Sun ☀️
Chatting 😄
Finished with a beer on the terrace 🍻
Went for a little mountain bike ride on this RTT day with my shock duo. 😎
In the top !!

Showing Translation

October 1, 2023,Rando VTT Yvette 2023 parcours 45km

Nice route, great signage and stocked refreshments.
The komoot average is wrong because it includes the time spent at the refreshments 😅😜

Showing Translation

August 13, 2021,The Bee 🐝 YO 45km

Nice course, with D + and singles. Course of the 45 YO slightly revisited.
Little surprise on the road ... fortuitous and pungent encounter with a wasp, who saw fit to slip under my T-shirt 🤪

Showing Translation

October 6, 2024,Rando de l'Yvette à l'Orge

A bit of a struggle this morning. I can't keep up with my friends.

Showing Translation

October 31, 2021,Sortie VTT Club - YO 60 ++

MTB club outing on the trail of the YO 60 via La Tour Montlhéry 👍🏻
Good outing on a slightly greasy ground but Ok and with + D + 😈
👍🏻

Showing Translation

June 4, 2023,Rando maudite, la galère

Based on Yo's track, I discovered some pretty nice corners but I also struggled on paths that were not passable. Therefore average rotten because a lot of walking... To do in winter when the nettles and brambles are not 2 meters high 😅

Showing Translation

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View of the Petite Vallée – Descent of the Rocher de Saulx loop from Sainte-Geneviève-des-Bois

View of the Petite Vallée

Descent of the Rocher de Saulx

Monsieur and Saint-Eloi Wood mountain bike playground

Fast Singletrack Trail

Les Arrachis

Côte de l'Escargot

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