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Routes
Mountain biking trails
France
Normandy
Bernay
Le Bosc-Roger-En-Roumois

Small tunnel in the dark – Robert-le-Diable Castle loop from Bosroumois

Routes
Mountain biking trails
France
Normandy
Bernay
Le Bosc-Roger-En-Roumois

Small tunnel in the dark – Robert-le-Diable Castle loop from Bosroumois

Moderate

4.9

(19)

111

riders

Small tunnel in the dark – Robert-le-Diable Castle loop from Bosroumois

03:44

42.2km

620m

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: August 21, 2026

Tips

Includes a segment in which cycling is not permitted

After 29.2 km for 92 m

Waypoints

A

Start point

Bus stop

Get Directions

1

9.50 km

Chemin du Sanglier

Highlight (Segment) • Trail

perfect for a gravel tour, or a mountain bike connection

Translated by Google •

Tip by

13.2 km

Forêt domaniale de la Londe-Rouvray

Forest

3

17.1 km

Carrefour de dingue

Highlight • Other

Attention, passage for advanced mountain bikers, very good physical conditions necessary, suitable shoes, and always hand on the brake to hold the bike and pilot :)

Translated by Google •

Tip by

17.5 km

Cave Entrance

Cave Entrance

19.7 km

Ruins

Ruins

6

26.5 km

Forest Path Descent

Highlight (Segment) • Trail

Watch out here

Translated by Google •

Tip by

7

27.5 km

Small tunnel in the dark

Highlight (Segment) • Other

Caving atmosphere! Provide a small lamp

Translated by Google •

Tip by

8

29.2 km

Robert-le-Diable Castle

Highlight • Castle

Robert the Devil's Castle is a medieval fortress dating from the time of the Dukes of Normandy. The castle is named after Robert the Devil, a legendary figure who was …

Translated by Google •

Tip by

9

32.4 km

Technical and super pleasant single track

Translated by Google •

Tip by

B

42.2 km

End point

Bus stop

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Way Types & Surfaces

Way Types

23.8 km

12.7 km

4.13 km

1.52 km

110 m

Surfaces

19.7 km

10.3 km

5.17 km

3.45 km

3.44 km

152 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.

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Weather

Powered by Foreca

Sunday 23 August

25°C

14°C

13 %

Additional weather tips

Max wind speed: 27.0 km/h

to get more detailed weather forecasts along your route

Comments

March 27, 2022,Sortie VTT la boue Roger
Very technical outing that requires concentration.

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