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Calvary of the Croix-du-Bois – La Mérantaise and its washhouse loop from Trappes

Routes

Bike touring routes & trails

Calvary of the Croix-du-Bois – La Mérantaise and its washhouse loop from Trappes

Hard

5.0

(1)

riders

Calvary of the Croix-du-Bois – La Mérantaise and its washhouse loop from Trappes

03:35

43.3km

480m

Cycling

Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route. The starting point of the route is accessible with public transport.

Last updated: June 18, 2026

Tips

Cycling is not permitted along parts of this route

After 0 m for 224 m

After 17.3 km for 276 m

After 43.1 km for 224 m

Waypoints

Start point

Train Station

Get Directions

6.93 km

Calvary of the Croix-du-Bois

Highlight • Other

Nice view over the valley

Translated by Google •

Tip by

7.69 km

La Mérantaise and its washhouse

Highlight • Historical Site

The forest of Port-Royal is distinguished by the pretty landscapes created by the Mérantaise which crosses it. The washhouse set up by the river further embellishes this idyllic setting.

Translated by Google •

Tip by

7.76 km

Forest Trail in Parc Naturel Régional de la Haute Vallée de Chevreuse

Highlight (Segment) • Trail

For gravel yes, but road bike NO!

Translated by Google •

Tip by

17.4 km

Beautiful view from Château de la Madeleine

Highlight • Historical Site

Feel free to make the effort to climb to the Château de la Madeleine, you will gain a beautiful view of the Chevreuse Valley!

Translated by Google •

Tip by

23.4 km

Rochers Forest of the Haute Vallée de Chevreuse

Highlight • Forest

Very beautiful forest with large stones and little used paths, which sometimes requires carrying the bike but the path at the bottom is passable.

Translated by Google •

Tip by

23.9 km

Dampierre-en-Yvelines Castle

Highlight • Castle

Castle well known to cyclists for its small paved strip which wakes up before going up the 17 turns.

Translated by Google •

Tip by

24.5 km

Iron House

Highlight • Other

For more information on the iron house.
yveline.org/la-maison-de-fer

Translated by Google •

Tip by

38.4 km

Path from Port Royal Forest to Le Mesnil-Saint-Denis

Highlight • Trail

43.3 km

End point

Train Station

Way Types & Surfaces

Way Types

22.0 km

9.19 km

5.03 km

5.02 km

1.57 km

442 m

Surfaces

20.1 km

11.8 km

6.17 km

4.60 km

599 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (170 m)

Lowest point (80 m)

Weather

Thursday 9 July

36°C

18°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

Comments

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Calvary of the Croix-du-Bois – La Mérantaise and its washhouse loop from Trappes

Calvary of the Croix-du-Bois

La Mérantaise and its washhouse

Forest Trail in Parc Naturel Régional de la Haute Vallée de Chevreuse

Beautiful view from Château de la Madeleine

Rochers Forest of the Haute Vallée de Chevreuse

Dampierre-en-Yvelines Castle

Iron House

Path from Port Royal Forest to Le Mesnil-Saint-Denis

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