The best gravel rides around Lagny-Le-Sec
4.3
(14)
86
riders
9
rides
Gravel biking around Lagny-Le-Sec offers access to diverse natural landscapes, primarily centered around the expansive Ermenonville Forest. This region is characterized by varied terrain, including sandy soils and areas with unique sandstone formations like Les Bruyères de Frais-Vent. The Valois region provides a picturesque backdrop for rides, with routes often traversing forest tracks and unpaved roads. The proximity to the Launette river and historical sites like Château d'Ermenonville adds to the scenic appeal for gravel cyclists.
Best gravel bike trails…
Last updated: May 25, 2026
55.6km
04:03
310m
330m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
4.4
(7)
30
riders
48.6km
02:44
250m
250m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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4.5
(2)
11
riders
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
2
riders
60.5km
04:07
530m
530m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
8
riders
67.6km
04:01
380m
380m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Other adventures around Lagny-Le-Sec
Tips from the Community
A towpath, or "chemin de halage," which runs alongside the river or canal, was an indispensable part of the transportation infrastructure in earlier times. Before ships could be propelled by motors, horses walked along the bank, pulling the vessel against the current. This was called "treideln," and that's how towpaths got their name, which has been passed down to this day. Where these paths, located directly on the riverbank, have been preserved, they are popular with hikers and cyclists.
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magnificent castle, a superb park
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The Great Stables of the Château de Chantilly, built in the 18th century by Louis-Henri de Bourbon, Prince of Condé, are among the most majestic in the world. A masterpiece of classical architecture by Jean Aubert, they have housed the Living Museum of the Horse, dedicated to equestrian art, since 1982. This site has been owned by the Institut de France since 1886.
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The Château de Thiers-sur-Thève, now in ruins, is a former 13th-century fortified castle listed as a Historic Monument in 1862. Built as a hunting lodge for the bishops of Beauvais, it is distinguished by its large state room pierced with large windows, a rare example of medieval residential architecture in the Île-de-France region. Partially dismantled in the 15th century, its circular towers, moats, and Gothic remains can still be admired.
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The Bruyères de Frais-Vent, located in the Ermenonville forest in the Montlognon woods, constitute an exceptional natural site. It is the only place in the massif where large blocks of sandstone rest on a vast layer of Fontainebleau sand.
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Listed as a Historic Monument since 1862, the church of Montagny-Sainte-Félicité stands apart from the village, on the site of a former priory dependent on the Abbey of Saint-Vincent de Senlis. Rebuilt in the 16th century in a flamboyant Gothic style, it is distinguished by its tall, 30-meter openwork octagonal spire, one of the most elegant in the Oise.
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Great walk for all levels that offers beautiful scenery!
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Until 15/3/25, don't miss the Val d'Oise Washhouses and Fountains Exhibition at Puiseux-en-France Town Hall, Place Jean Moulin, bringing together 30 photographs by François Vuillemet and discover some of the 250 washhouses and fountains on the Vexin.
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Frequently Asked Questions
What kind of terrain can I expect on gravel bike trails around Lagny-Le-Sec?
The gravel bike trails around Lagny-Le-Sec primarily traverse the expansive Ermenonville Forest. You can expect varied terrain, including sandy soils and unpaved forest tracks. A notable feature is Les Bruyères de Frais-Vent, an exceptional natural site with large sandstone blocks resting on Fontainebleau sand, offering a unique riding experience.
How many gravel bike trails are available in the Lagny-Le-Sec area?
There are 14 gravel bike trails available around Lagny-Le-Sec. These routes offer a mix of easy, moderate, and difficult options to suit various skill levels.
Are there any easy gravel bike trails for beginners near Lagny-Le-Sec?
Yes, there are 2 easy gravel bike trails in the area. While specific easy routes aren't detailed, the region offers options suitable for those new to gravel biking, often found within the extensive forest tracks of Ermenonville Forest.
What are some popular moderate gravel bike routes around Lagny-Le-Sec?
For a moderate challenge, you might enjoy the Chantilly Castle – Chantilly Castle loop from Montlognon, which is 48.6 km long and offers scenic views around the historic castle. Another moderate option is the Chantilly Castle – Chantilly Castle loop from Le Plessis-Belleville, a longer 67.6 km route also exploring the castle surroundings.
Are there any challenging gravel bike trails for experienced riders?
Yes, there are 2 difficult gravel bike trails available. One challenging option is the Plessis-Belleville to Coye-la-Forêt – Tour de l'Oise gravel, a 52.9 km route providing a demanding experience through the Oise region. Another is the Marne Statues Park – Marne River Loops loop from Monthyon, a 60.4 km trail with significant elevation changes.
What kind of natural features or landmarks can I see along the gravel bike trails?
The trails often lead through the diverse landscapes of the Valois region and the Ermenonville Forest. You can encounter unique geological formations like Les Bruyères de Frais-Vent. Some routes also offer views of the Launette river and pass near historical sites such as Château d'Ermenonville.
What do other gravel bikers say about the trails in Lagny-Le-Sec?
The gravel biking routes around Lagny-Le-Sec are highly regarded by the komoot community, holding an average rating of 4.3 stars from over 10 reviews. Riders often praise the varied terrain and the extensive forest tracks within the Ermenonville Forest.
Are there any historical sites or castles to visit near the gravel routes?
Absolutely. The region is rich in history. You can visit the historic Château d'Ermenonville, which is nestled within a country-inspired park. Another significant site is Chaalis Abbey, featuring ruins, a museum, and beautiful gardens, offering a cultural interlude to your ride.
Is Lagny-Le-Sec a good base for exploring the Ermenonville Forest by gravel bike?
Yes, Lagny-Le-Sec serves as a convenient base due to its close proximity to the expansive Ermenonville Forest. This forest is a prime location for gravel biking, offering a wide network of tracks and varied terrain easily accessible from the village.
Are there any circular gravel bike routes available?
Yes, several routes are designed as loops. For example, the Chantilly Castle – Chantilly Castle loop from Montlognon and the Marne Statues Park – Marne River Loops loop from Monthyon are both circular routes, allowing you to start and finish in the same location.
What is the best time of year for gravel biking in Lagny-Le-Sec?
While specific seasonal recommendations aren't provided, the varied terrain of the Ermenonville Forest, including sandy sections, generally makes it suitable for gravel biking across multiple seasons. Spring and autumn often offer pleasant temperatures and beautiful scenery, while summer can be enjoyable under the forest canopy.
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