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France
Ile-de-France
Palaiseau
Briis-Sous-Forges

Château du Marais – Rochefort-en-Yvelines loop from Briis-sous-Forges

Routes
Road cycling routes
France
Ile-de-France
Palaiseau
Briis-Sous-Forges

Château du Marais – Rochefort-en-Yvelines loop from Briis-sous-Forges

Easy

18

riders

Château du Marais – Rochefort-en-Yvelines loop from Briis-sous-Forges

01:51

44.3km

280m

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: November 4, 2025

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Waypoints

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1

6.50 km

Château du Marais

Highlight • Castle

Very beautiful castle on the edge of a pond and marsh.
Significant vegetation in the summer preventing a good view of the castle.

Translated by Google •

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2

15.9 km

Rochefort-en-Yvelines

Highlight • Other

A village of medieval origin, Rochefort en Yvelines is well worth a little detour, as the town has retained its picturesque character with its old houses and cobbled streets, and …

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3

23.2 km

Clairefontaine National Football Center

Highlight • Structure

Very nice hill to reach the center of Clairefontsine.

Translated by Google •

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4

24.0 km

Route de la Celle (D72)

Highlight • Other

Beautiful isolation in the trees

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5

25.8 km

Route Through the Forest of Rambouillet

Highlight • Trail

Between La Celle and Bordes and Clairefontaine this road crossing the magnificent forest of Rambouillet is a Must. Very quiet and with little road traffic.

Translated by Google •

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6

31.1 km

Bullion Church

Highlight • Other

Church of Saint Vincent and Saint Sebastian de Bullion built between the 11th and 16th centuries. Listed as a historic monument.

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7

34.4 km

Route Through Forêt de Villevert

Highlight • Forest

Small road through Villevert forest, very pleasant to ride.

Translated by Google •

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8

44.1 km

Anne Boleyn Tower

Highlight • Other

This superb square tower, built in Briis-Sous-Forge in the Essonne department, is the only vestige of a medieval castle, of which it was undoubtedly the keep.

Translated by Google •

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B

44.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

33.3 km

9.05 km

1.01 km

960 m

< 100 m

Surfaces

41.1 km

3.21 km

< 100 m

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Elevation

Elevation

Highest point (170 m)

Lowest point (60 m)

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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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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.5

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.7

713

Loop in the Yvelines starting from the forest of Marly

02:20h

55.4km

410m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Expert

4.2

355

Big loop in the Yvelines from Longchamps

04:36h

104km

950m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.7

456

The bumps of the Cheuvreuse — Parc Naturel Régional de la Haute Vallée de Cheuvreuse

03:50h

84.9km

810m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Easy

4.6

473

Small loop of the Yvelines

01:39h

38.9km

290m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.2

40

Tour of the forest roads — Parc Naturel Régional de la Haute Vallée de Cheuvreuse

02:00h

45.9km

250m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Easy

4.5

48

Petite boucle du Gâtinais — Parc Naturel Régional du Gâtinais Fançais

01:45h

42.8km

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.4

29

Loop of Gâtinais Nord — Parc Naturel Régional du Gâtinais Français

02:19h

54.1km

360m

How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Expert

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Loop of the Cheuvreuse starting from Rambouillet — Parc Naturel Régional de la Haute Vallée de Cheuvreuse

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

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Aqueduc de Buc (arcades) – Côte des 17 Tournants loop from Boucicaut

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

4.1

234

Côte des Loges – Aqueduc de Buc (arcades) loop from Avenue Henri Martin

02:15h

50.8km

460m

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