4.3
(447)
1,951
riders
20
rides
Mountain biking around Osny offers diverse terrain within the Parc naturel régional du Vexin français. This region features a limestone plateau approximately 100 meters high, carved by river valleys such as the Oise. Extensive woodlands covering over 10,000 hectares provide shaded trails, complemented by agricultural fields and hills. The varied landscape supports a network of mountain bike trails suitable for different skill levels.
Last updated: October 22, 2026
4.7
(19)
93
riders
46.2km
03:02
220m
220m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
9
riders
50.8km
03:31
390m
390m
Moderate mountain bike ride. Good fitness required.

4.7
(6)
15
riders
19.8km
01:19
120m
120m
Easy mountain bike ride.
6
riders
38.9km
03:01
380m
380m
Moderate mountain bike ride. Good fitness required.
5.0
(2)
7
riders
50.8km
03:42
470m
470m
Moderate mountain bike ride. Good fitness required.
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Very pleasant route - more challenging route on the Aubergenville
0
0
The railway bridge that overlooks the tracks and its graffiti... the essential passage between two parts of the forest
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historic site of the 24vtt of Cergy.....
1
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Magnificent restoration of the royal hunting lodge 🤴
0
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During the week, a peaceful place on the edge of a beautiful forest, a breath of fresh air!
0
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the wash house and the river, so cute
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0
There are over 20 mountain bike trails around Osny, offering a variety of options for different skill levels. These routes are primarily located within the scenic Parc naturel régional du Vexin français.
The terrain around Osny is quite varied, characterized by a limestone plateau, river valleys (like the Oise), extensive woodlands covering over 10,000 hectares, and agricultural fields interspersed with hills. You'll find a mix of shaded forest paths, open field tracks, and some routes with varied elevations, providing a dynamic riding experience.
Yes, there are several easy mountain bike trails around Osny. Out of the 20 available routes, 5 are specifically graded as easy, making them perfect for beginners or those looking for a more relaxed ride. An example of an easy route is the Oise Lock and Dam – 24H MTB Circuit Cergy loop from Osny.
Yes, for experienced riders seeking a challenge, there is at least one difficult mountain bike route around Osny. The Trail in Montmorency Forest – Oise Riverside Walk loop from Osny is a demanding 55 km route with significant elevation changes, offering a rigorous workout and technical sections.
The mountain bike trails around Osny are highly rated by the komoot community, with an average score of 4.37 stars from over 380 reviews. More than 1900 mountain bikers have used komoot to explore the varied terrain, often praising the diverse landscapes and well-maintained paths within the Vexin Français Regional Natural Park.
Yes, the majority of mountain bike routes around Osny are designed as circular loops, allowing you to start and finish at the same point. This includes popular options like the Banks of the Oise River – Oise Riverside Walk loop from Osny and the Banks of the Oise River – La Butte des Landes loop from Osny.
Many mountain bike trails in Osny pass through or near significant natural features and historical landmarks. You can explore areas around the Oise River, including the Confluence of the Seine and the Oise, and the Axe Majeur footbridge. Trails also offer views of the extensive woodlands and agricultural fields characteristic of the Vexin Français Regional Natural Park.
Yes, several routes will bring you close to historical sites and castles. You might pass by the charming town of Auvers-sur-Oise, known for its artistic heritage, or cycle near impressive structures like Conti Castle or Château d’Auvers. The Oise Lock and Dam – Pontoise Cathedral loop from Osny, for instance, offers a blend of natural beauty and historical sights.
Osny is part of the Val d'Oise department, which benefits from regional public transport networks. While specific trailheads might require a short ride or walk from a station, it is generally possible to access the wider Vexin Français Regional Natural Park area via public transport, especially from larger towns like Cergy or Pontoise which are well-connected.
The Vexin Français Regional Natural Park, encompassing Osny, is enjoyable for mountain biking through much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery with changing foliage. Summer provides warm, long days, with the extensive woodlands offering welcome shade. Winter riding is possible, though some trails might be muddy or require more appropriate gear.
Yes, with 5 easy-graded routes, there are options suitable for families or those with less experience. These trails often follow valley floors with minimal elevation changes, providing an effortless way to discover the natural beauty of the Vexin Français. Always check the specific route details for distance and elevation to ensure it matches your family's ability.


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