4.4
(517)
2,720
riders
228
rides
Mountain biking around Boissy-L'Aillerie offers a network of trails primarily following the Oise Riverbanks and traversing the surrounding countryside. The region features varied terrain, including paths along waterways, through agricultural lands, and past historical sites like castles and mills. Elevation gains are generally moderate, providing accessible routes for different skill levels.
Last updated: May 8, 2026
4.4
(40)
150
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.9
(14)
77
riders
30.6km
02:05
190m
190m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4.6
(8)
22
riders
41.9km
03:11
500m
500m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.0
(3)
24
riders
46.4km
03:26
480m
480m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3.5
(2)
21
riders
45.3km
03:18
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Absolutely beautiful, eyes filled with this landscape that puts a smile on your lips.
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At the bend in the path, the entrance to Port Cergy appears, surprising...
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So a very steep climb over the rocks, which ends with steep drops. Good luck!
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Is it allowed to cross? Not sure... I did, I was looked at and greeted. But not blocked. However, it's not easy to get out on the other side, the exit is closed. It's possible to go through a small door.
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There are over 230 mountain bike trails available around Boissy-L'Aillerie, offering a wide variety of options for different skill levels and preferences.
Yes, Boissy-L'Aillerie offers a good selection of trails for beginners. There are 75 easy mountain bike routes, many of which follow the relatively flat Oise Riverbanks, providing a gentle introduction to the area's cycling.
While the region is generally known for its moderate terrain, there are 9 more difficult mountain bike routes around Boissy-L'Aillerie for those seeking a greater challenge. These routes often feature more significant elevation changes and technical sections.
The spring and autumn months are generally ideal for mountain biking in Boissy-L'Aillerie. The weather is typically mild, and the natural landscapes along the Oise River and through the countryside are particularly beautiful. Summer can also be pleasant, though it's advisable to ride earlier in the morning or later in the afternoon to avoid the midday heat.
Yes, many of the mountain bike trails in the area are circular, allowing you to start and finish at the same point. For example, the Oise Riverbanks – Axe Majeur footbridge loop from Cergy - Saint-Christophe is a popular option that brings you back to your starting point.
The trails in Boissy-L'Aillerie are scenic due to their diverse landscapes. You'll find routes that follow the picturesque Oise Riverbanks, wind through open countryside, and pass by historical sites such as castles and mills. The Axe Majeur footbridge – Oise Riverbanks loop from Cergy-le-Haut offers views of both the river and modern architecture.
Many of the trails in the Boissy-L'Aillerie region are suitable for dogs, especially those that traverse open countryside and riverbanks. However, it's always recommended to keep your dog on a leash, especially when passing through agricultural areas, near livestock, or in more populated sections, and to check local regulations for specific areas.
Yes, given the proximity to towns and villages along the Oise River, you'll find various cafes and restaurants. Many routes pass through or near communities where you can stop for refreshments. It's a good idea to plan your route to include a stop in a village like Cergy or Osny.
The trails often lead past historical and architectural landmarks. You can encounter sites like the Axe Majeur footbridge, the Château de Théméricourt, and the Pavilion of Love in Neuville-sur-Oise. The La Villette Castle – Le Moulin de Théméricourt loop specifically highlights some of these historical points.
Absolutely. The region boasts several natural points of interest. You can ride near the Confluence of the Seine and the Oise, explore the Auversian Geological Site, or enjoy views from the View of the Vexin. The trails often integrate these natural elements into the riding experience.
The mountain bike trails around Boissy-L'Aillerie are highly rated by the komoot community, with an average score of 4.4 stars from over 500 reviews. Riders often praise the varied terrain, the scenic riverbank paths, and the opportunity to explore both natural landscapes and historical sites. The accessibility for different skill levels is also frequently highlighted.
The mountain bike trails in the area vary in length. Many popular routes range from approximately 30 to 45 kilometers, taking between 2.5 to 3.5 hours to complete. For example, the Banks of the Oise River – Oise Riverside Walk loop from Osny is about 46 kilometers long.


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