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Routes
Hiking trails & Routes
France
Ile-de-France
Versailles
Châteaufort

Le Rocher Gris – Calvary of the Croix-du-Bois loop from Magny-les-Hameaux

Routes
Hiking trails & Routes
France
Ile-de-France
Versailles
Châteaufort

Le Rocher Gris – Calvary of the Croix-du-Bois loop from Magny-les-Hameaux

Moderate

4.5

(4)

20

hikers

Le Rocher Gris – Calvary of the Croix-du-Bois loop from Magny-les-Hameaux

03:55

14.6km

180m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: March 21, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional de la Haute Vallée de Chevreuse

Natura 2000 du Massif de Rambouillet et Zones Humides Proches

Waypoints

A

Start point

Bus stop

Get Directions

1

1.35 km

Le Rocher Gris

Highlight • Natural Monument

Massive boulder now supported by brick masonry
Viewpoint over the Mérantaise below

Translated by Google •

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2

1.62 km

Obstacle on the path

Highlight • Other

a few trees felled

Translated by Google •

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3

2.61 km

From the Croix du Bois park, you just have to enter the forest to have fun. The paths and trails are technical, bumpy and sometimes steep. The perfect mix for a great mountain bike ride.

Translated by Google •

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4

2.95 km

Calvary of the Croix-du-Bois

Highlight • Other

Nice view over the valley

Translated by Google •

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5

6.70 km

Le Manet

Highlight • Other

6

7.41 km

Lancaster stele ND765

Highlight • Other

Memorial dedicated to a British Lancaster bomber that fell over the town of Montigny-le-Bretonneux: on the night of June 7-8, 1944, this Lancaster, number ND765 of Squadron 622, was shot …

Translated by Google •

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7

10.9 km

Hélène Boucher Memorial

Highlight • Other

Coordinates: 48.75101/ 2.05141
Location of Hélène Boucher's accident, on November 30, 1934, at the controls of the Caudron C 430 Rafale N°02 F-AMVB.
aerosteles.net/stelefr-magny-boucher

Translated by Google •

Tip by

B

14.6 km

End point

Bus stop

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Way Types & Surfaces

Way Types

7.83 km

5.50 km

708 m

459 m

< 100 m

Surfaces

6.99 km

4.75 km

2.13 km

656 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 (170 m)

Lowest point (110 m)

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Weather

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Friday 22 May

29°C

12°C

0 %

Additional weather tips

Max wind speed: 8.0 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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Nearby routes

Moderate

4.7

306

Jean Racine côté Château de la Madeleine — Parc Naturel Régional de la Haute Vallée de Chevreuse

02:54h

10.1km

240m

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