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Boissy-L'Aillerie

Saint-Cyr Castle – Village d'Us loop from Boissy-l'Aillerie

Boissy-L'Aillerie

Saint-Cyr Castle – Village d'Us loop from Boissy-l'Aillerie

Hard

3

riders

Saint-Cyr Castle – Village d'Us loop from Boissy-l'Aillerie

03:20

47.7km

550m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: March 22, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional du Vexin Français

Waypoints

A

Start point

Train Station

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1

21.1 km

Buttes de Rosne trail (216m)

Highlight • Other

2

26.2 km

Saint-Cyr Castle

Highlight • Castle

Nice castle located in a quiet countryside.

Translated by Google •

Tip by

3

26.4 km

Château in the middle of the Vexin

Highlight • Castle

This is the Château de Saint-Cyr in Lavilletertre. Great place for biking.

Translated by Google •

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4

34.0 km

Short but fun... Slalom and piloting

Highlight • Other

5

39.8 km

Village d'Us

Highlight • Settlement

6

42.9 km

Beginning of chaussée Jules César

Highlight • Other

The Jules-César roadway in Vexin bears witness to Roman influence in the region. It is part of a network of military roads dating back more than 2,000 years. This historic …

Translated by Google •

Tip by

7

44.9 km

Mill and communal washhouse in Courcelles-sur-Viosne

Highlight • River

A beautiful piece of nature, the building opposite the wash house has a magnificent architecture.

Translated by Google •

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8

45.1 km

Pretty village

Highlight • Other

Between Montgeroult and Courcelles sur Viosne, we take full view.

Translated by Google •

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B

47.7 km

End point

Train Station

Way Types & Surfaces

Way Types

21.3 km

18.6 km

5.56 km

2.03 km

221 m

< 100 m

Surfaces

19.4 km

14.0 km

13.7 km

349 m

161 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 (180 m)

Lowest point (40 m)

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Weather

Powered by Foreca

Wednesday 20 May

23°C

7°C

0 %

Additional weather tips

Max wind speed: 10.0 km/h

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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