4.5
(36)
135
riders
44
rides
Mountain bike trails around Chambors traverse a vast domain characterized by France's largest enclosed forest, spanning over 13,500 acres. The landscape features a diverse mix of woodlands, open prairies, wetlands, and ponds, particularly near the Cosson River. This varied terrain offers gentle slopes and engaging experiences for mountain bikers. The region's ecological significance is highlighted by its status as a Natura 2000 site.
Last updated: June 25, 2026
4.4
(5)
22
riders
51.0km
02:42
220m
220m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(1)
7
riders
37.9km
02:43
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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9
riders
38.7km
02:44
300m
300m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3.5
(2)
5
riders
26.0km
01:56
310m
310m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.3
(3)
9
riders
29.8km
01:35
130m
130m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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For us, cycling hikers, the place is perfect. Not only is the setting absolutely superb – a building steeped in history surrounded by absolute calm – but the welcome is also warm and perfectly suited to the needs of cycle tourists. It is very appreciable to be able to leave your bikes safely in a dedicated space after a day of cycling. The comfort of the rooms, the authentic charm of the place and the quality of the breakfast allow you to leave the next day with optimal energy. The location is ideal for exploring the surrounding routes, far from the urban hustle and bustle. A favorite spot that I highly recommend to all lovers of the "petite reine" (the little queen, referring to the bicycle) looking for rest and character. An essential stop if you are passing through the Vernon or Gisors area!
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A military fortress with a defensive purpose, built in 1097, during the reign of William the Conqueror's second son, Gisors Castle marks a major page in the medieval history of Normandy. This fortification was intended to protect the Norman possessions of the King of England against the ambitions of the King of France. A true border place and eastern lock of Normandy, it was part of a vast campaign of fortifications in the Epte Valley, the natural boundary between the two kingdoms.
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We know of Saints Gervais and Protais that they were Christian martyrs in the 2nd century in Milan. At the time, the Roman Empire forced all its subjects to worship the emperor, which was unacceptable to Christians. If they refused, they were crucified or sent to the arena to be devoured by lions between gladiatorial fights. Thus, Saint Ambrose, bishop of Milan, found them, in 386, buried side by side. This great bishop affirmed that they had been martyrs by fidelity to their baptism. He even added "They are of a prodigious size, such as one was in ancient times." Their cult reached Gaul where a large number of churches were dedicated to them.
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The parish church of Saint-Gervais Saint-Protais was consecrated in 1119 by Pope Calixtus 11. This Romanesque church saw its nave ravaged by fire in 1123. It was rebuilt in 1160. Thanks to funding from Queen Blanche of Castile, the people of Gisors built a Gothic choir, consecrated in 1249. It was built according to the Chartres model, common at the time in Ile-de-France, with a three-level elevation: large arcades, triforium and high windows pierced with oculi. Thanks to funding from charitable brotherhoods and trade corporations, the church underwent multiple transformations from the end of the 15th century with the addition of radiating chapels and an ambulatory at choir level. Entrusted to the Grappins, a family of architects from Vexin, the work continued in the 15th century with the reconstruction of the nave and the chapels of the side aisles in flamboyant Gothic style, then of the façade decorated with Renaissance motifs.
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The Moulin de Fourges is a magical place built at the end of the 18th century, with architecture inspired by Queen Marie-Antoinette's hamlet at the Palace of Versailles. At the gates of the Vexin park, this listed site offers a truly bucolic setting with its country garden on the banks of the Epte river.
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Reilly Pond is surrounded by diverse wetland flora, such as angelica, waterhemp, and yellow loosestrife, which attract many insects and birds. A picnic area will allow you to relax and admire the landscape. Reilly Pond is part of a larger natural area, Reilly Marsh, which is an ancient peat bog sheltering rare plant and animal species. You can discover this space with a guide from the Hauts-de-France Conservatory of Natural Spaces who will reveal the secrets of this remarkable ecosystem. Reilly Pond is an ideal destination for nature lovers who wish to discover the beauty and diversity of the French landscapes.
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Old fortified castle, built between the end of the 11th and the 12th century, today in ruins.
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There are over 40 mountain bike trails around Chambors, offering a wide range of options for different skill levels. The komoot community has explored these routes more than 140 times.
The trails in Chambors cater to various abilities. You'll find 17 easy routes, 25 moderate routes, and 1 difficult trail, ensuring there's something for everyone from beginners to experienced riders.
Mountain biking in Chambors offers a unique experience within France's largest enclosed forest, spanning over 13,500 acres. The diverse landscape features woodlands, open prairies, wetlands, and ponds near the Cosson River, providing a rich natural environment. It's also a Natura 2000 site, known for its biodiversity, including stags and wild boars.
Yes, many of the mountain bike routes in Chambors are circular, allowing you to start and end at the same point. For example, the Gisors Castle – Chemin du Baron loop from Gisors is a popular circular option.
Yes, with 17 easy routes and generally gentle slopes, many mountain bike trails in Chambors are suitable for families. These routes offer a great way to explore the natural beauty of the enclosed forest together. Consider routes like the Epte Valley – Gisors Castle loop from Gisors for a more relaxed ride.
While the Chambord estate is a natural environment with abundant wildlife, including stags and wild boars, specific regulations regarding dogs on mountain bike trails can vary. It's always best to check local signage or the official Chambord estate website for the most current rules on pets to ensure a safe and respectful visit for all, especially given its status as a Natura 2000 site.
The mountain bike trails in Chambors are highly rated by the komoot community, with an average score of 4.6 stars from over 40 reviews. Riders often praise the immersive experience within the vast enclosed forest and the varied terrain that keeps rides engaging.
The Chambord estate itself is a scenic wonder, with its vast enclosed forest, open prairies, and wetlands near the Cosson River. Keep an eye out for diverse wildlife, including various bird species and larger mammals. While not a specific viewpoint, the Lake loop from Chaumont-en-Vexin offers beautiful views of ponds and wetlands.
Beyond the trails, you can explore several historical and natural attractions. Notable sites include Gisors Castle, the historic Saint-Gervais–Saint-Protais Church, and the ancient Dolmen des Trois-Pierres. The scenic Epte Valley also offers beautiful landscapes.
While most routes are easy to moderate, there is one difficult mountain bike trail available for those seeking a greater challenge. The varied terrain throughout the region, including woodlands and prairies, provides engaging experiences even on moderate routes like the Golf Bertichères – Lavoir de Reilly loop from Gisors.
Chambors offers enjoyable mountain biking throughout much of the year. Spring and autumn provide pleasant temperatures and vibrant scenery as the forest changes. Summer is also popular, though it can be warmer. The diverse landscape ensures a beautiful ride in any season, with the enclosed forest offering some shelter.


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