4.6
(541)
2,080
riders
288
rides
Mountain biking around Saint-Cyr-Sous-Dourdan offers diverse terrain, primarily within the Dourdan National Forest. The region features a network of trails with varied profiles, including rolling paths, uphill climbs, single-tracks, and descents. Riders can expect a mix of technical sections and fast descents, often winding through shaded areas and alongside features like the Ru des Vaux. This landscape provides options for different skill levels, from moderate routes to more challenging paths.
Last updated: August 15, 2026
5.0
(4)
21
riders
43.7km
03:24
190m
190m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(3)
19
riders
11.9km
01:01
150m
150m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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4.7
(6)
5
riders
33.9km
02:33
250m
250m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(1)
9
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
2
riders
35.8km
02:52
440m
440m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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The area is ideal for mountain biking, a pure moment of relaxation with family or friends
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A great tour, a must-do. The view is amazing and the route is very pleasant and suitable for all levels.
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The castle of Forges-les-bains was built in the 17th century, before being remodeled in the 18th century by Edme Mathurin Le Jariel, squire of the king. Currently, some parts are dilapidated, others restored. It is the in-between.
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Very pretty village but few shops! Choose Clairefontaine for supplies
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Magnificent wash house and its lake...
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a crossroads like so many others without any information...
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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 in its center the small market square, a quiet spot near the bakery with a fountain. The most curious, and the bravest, will go up (on foot) to the church which overlooks the town and the forest. You will also see the remains of the fortified castle hidden in the woods.
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The Arrows of the Cathedrals is a monumental metal sculpture, created by Georges Saulterre and installed in 1989 along the A10 in the area of Forges-les-Bains. At a height of 21 meters it weighs 30 tonnes. In 1998, the sculpture was listed in the Guinness Book of World Records as "the tallest sculpture made by a man." It was acquired by Cofiroute. For more information: https://fr.wikipedia.org/wiki/Les_Fl%C3%A8ches_des_cath%C3%A9drales
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The trails primarily wind through the Dourdan National Forest, offering a mix of varied terrain. You'll encounter rolling paths, uphill climbs, single-tracks, and descents. Some routes feature technical sections and fast descents, often alongside natural features like the Ru des Vaux, providing a diverse riding experience.
Yes, the area caters to various skill levels. Out of over 290 available routes, you'll find around 70 easy trails, over 180 moderate options, and more than 40 difficult paths, ensuring there's something for beginners to experienced riders. For example, the View of the Château du Marais loop from Angervilliers is a moderate trail suitable for many.
Many trails traverse the beautiful Dourdan National Forest, characterized by diverse tree species and rich flora. You might also encounter picturesque sections along the Ru des Vaux with small stone bridges. For historical sights, the nearby town of Dourdan offers its own Château de Dourdan, and other routes pass by landmarks like the Old Route of the Limours Aérotrain.
Yes, with approximately 70 easy trails available, there are options suitable for families looking for a less strenuous ride. These trails often feature smoother paths within the Dourdan National Forest, providing a pleasant experience for all ages. Look for routes marked as 'easy' on komoot for suitable options.
Generally, dogs are welcome on trails within the Dourdan National Forest, provided they are kept under control, especially around wildlife and other trail users. It's always a good idea to check local signage for any specific restrictions on individual paths.
Spring and autumn are often ideal, offering pleasant temperatures and beautiful forest scenery. Spring brings blooming flora, while autumn showcases vibrant foliage. Summer can be enjoyable, especially in the shaded forest sections, but be mindful of warmer temperatures. Winter riding is possible, but trails may be muddy or icy.
The trails are highly rated by the komoot community, with an average score of 4.6 stars from over 500 reviews. Riders frequently praise the varied forest paths, the mix of technical challenges and fast descents, and the overall natural beauty of the Dourdan National Forest. Many appreciate the options available for different ability levels.
Yes, there are several longer routes for those seeking an extended ride. For instance, the Grillon Trail – Fishing pond loop from Sermaise covers over 51 kilometers, and the challenging Remarkable oak – Route aux Cerfs loop from Rochefort-en-Yvelines extends for more than 66 kilometers through dense forest.
Absolutely. Many of the mountain bike trails around Saint-Cyr-Sous-Dourdan are designed as loops, allowing you to start and finish at the same point. Examples include the Golden Pond – Aérotrain Bertin Bridge loop from Saint-Cyr-sous-Dourdan and the Medieval town of Dourdan – Fishing pond loop from Sermaise.
Beyond the trails, the region offers several historical attractions. The town of Dourdan, a former royal town, features the impressive Château de Dourdan. Other notable sites include Breteuil Castle and the Saint-Sulpice Church of Saint-Sulpice-de-Favières, offering a blend of outdoor activity and cultural exploration.
There are over 290 mountain bike trails available around Saint-Cyr-Sous-Dourdan, offering a wide variety of routes for different preferences and skill levels.


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