Hard mountain bike ride. Great for any fitness level. 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: January 24, 2026

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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

Start point

Bus stop

Get Directions

2.08 km

Bois de la Garenne singletrack

Highlight • Trail

4.47 km

Route Forestière de la Garenne

Highlight • Trail

Quite a nice little passage on a mountain bike :)

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5.18 km

Port Royal Singletrack

Highlight • MTB Park

Great spot for mountain bikers looking for thrills!
Tested with a gravel bike, I would have preferred to have had a mountain bike, but with caution I was still able to have fun!

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9.93 km

Mare Ronde

Lake

13.1 km

View of Port-Royal Abbey

Highlight • Castle

Very good passage in the forest, enjoy!

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13.4 km

Descent from Port-Royal Abbey

Highlight (Segment) • Trail

One of the most beautiful descents in the park of the Chevreuse valley! the track is well traced... fortunately because the slope is steep and you quickly pick up speed when you know a little about this playful track

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14.8 km

Single from Port-Royal

Highlight • Other

Long single of 5km a little technical and while relaunching !!
Great !
Avoid in too wet weather there are a lot of roots that slip and the formation of …

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17.1 km

Singletrack in the Port-Royal State Forest

Highlight (Segment) • Trail

super technical and rolling single
to do absolutely

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19.2 km

Manet Pond

Highlight • Lake

24.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

20.5 km

2.83 km

977 m

< 100 m

Surfaces

9.83 km

7.12 km

3.69 km

3.28 km

433 m

< 100 m

Elevation

Highest point (170 m)

Lowest point (120 m)

Weather

Tuesday 3 February

12°C

2°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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View of Port-Royal Abbey

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Singletrack in the Port-Royal State Forest

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