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Routes
Mountain biking trails
France
Ile-de-France
Palaiseau
Forges-Les-Bains

Viaduc de la Prédécelle – Étang de la Baleine loop from Forges-les-Bains

Routes
Mountain biking trails
France
Ile-de-France
Palaiseau
Forges-Les-Bains

Viaduc de la Prédécelle – Étang de la Baleine loop from Forges-les-Bains

Moderate

4.4

(11)

15

riders

Viaduc de la Prédécelle – Étang de la Baleine loop from Forges-les-Bains

02:35

32.2km

340m

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 28, 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

6.07 km

Viaduc de la Prédécelle

Highlight • Bridge

It is a mini viaduct which offers beautiful views

Translated by Google •

Tip by

2

18.0 km

Do not leave the trajectory under penalty of ending up in the fir trees 🤣, and be careful of handlebars that are too wide

Translated by Google •

Tip by

3

20.0 km

It should also be on the Paris/Chartres line...

Translated by Google •

Tip by

4

20.6 km

Rochefort's smallest single

Highlight (Segment) • Other

Very easy continuation of bumps in dry weather

Translated by Google •

Tip by

5

24.0 km

Angervilliers Forest Trail

Highlight (Segment) • Trail

Be careful a lot of stones

Translated by Google •

Tip by

6

27.8 km

Étang de la Baleine

Highlight • Lake

beautiful view of the lake which is worth a detour

Translated by Google •

Tip by

7

30.4 km

Sandpit

Highlight • Other

Nice little sandpit with some bumps

Translated by Google •

Tip by

8

32.0 km

Château de Forges-les-Bains

Highlight • Castle

The castle of Forges-les-Bains was built in the 17th century, before being remodeled in the 18th century by Edme Mathurin Le Jariel, the king's squire.

Translated by Google •

Tip by

B

32.2 km

End point

Bus stop

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Way Types & Surfaces

Way Types

20.9 km

3.68 km

3.47 km

2.81 km

1.25 km

131 m

Surfaces

8.62 km

8.25 km

6.78 km

5.94 km

1.65 km

933 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 (90 m)

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Weather

Powered by Foreca

Tuesday 1 September

26°C

11°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

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