4.3
(388)
1,446
riders
216
rides
Mountain biking around Forêt d'Ermenonville offers varied terrain characterized by sandy soils, extensive pine forests, and hilly sections. This forest, part of the larger Massif des Trois Forêts, features a network of trails with diverse elevation changes, including engaging descents. The sandy composition of the ground provides a unique riding experience, particularly enjoyable in autumn and winter when other areas might be muddy. Riders can explore a landscape dotted with impressive sandstone blocks and open heathlands.
Last updated: July 2, 2026
4.8
(37)
209
riders
41.7km
03:24
330m
330m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.4
(12)
38
riders
24.3km
02:08
310m
320m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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3.5
(13)
12
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
8
riders
25.3km
02:10
250m
250m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.0
(2)
8
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Spanning over 3,300 hectares, the Ermenonville forest, along with those of Halatte and Chantilly, forms the vast Trois Forêts massif. Once owned by the monks of Chaalis and other nearby abbeys, it is now renowned for its moors, Scots pines, and sandy soil, home to rare wildlife such as the European nightjar and the praying mantis.
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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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This castle is a very pretty place full of charm which according to Wikipedia dates from the 18th century and whose origins date back to the year 987!!!!!
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Perfect setting in Jean Jacques Rosseau Park to rest your feet while enjoying a picnic
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pay attention to the passages in the middle of the ONF plots. Traffic is prohibited there.
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Rather a question! We want to hike in the fresh wind trail area, with the rocks this Sunday. Is there HUNTING in this area!!?
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Ermenonville Castle is a medieval fortress which was transformed into a castle in the 18th century. The castle is located in the heart of a country-inspired park, from where you can admire the view of the Launette and the Jean-Jacques Rousseau park.
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Forêt d'Ermenonville offers an extensive network of over 230 mountain bike trails. These routes cater to various skill levels, including easy, moderate, and difficult options, ensuring there's something for every rider.
The terrain in Forêt d'Ermenonville is characterized by sandy soils, extensive pine forests, and hilly sections with varied elevation changes. You'll encounter both challenging climbs and engaging descents. The sandy composition of the ground provides a unique riding experience, especially enjoyable in autumn and winter when other areas might be muddy.
Yes, Forêt d'Ermenonville offers a diverse range of trails. Out of over 230 routes, 37 are classified as easy, 188 as moderate, and 5 as difficult. This variety ensures that both beginners looking for a gentle ride and advanced riders seeking a challenge can find suitable paths.
The forest is rich in natural beauty and unique features. You can explore sandy moors, dense pine forests, and impressive sandstone blocks like the Pierre Sorcière (Witch Stone), which offers panoramic views, or the Grès Sainte-Marguerite. The unique "Mer de Sable" (Sea of Sand) is also a notable natural area. You might also encounter the Les Bruyères de Frais-Vent.
Yes, with 37 easy trails available, Forêt d'Ermenonville can be suitable for family mountain biking. The varied terrain and scenic environment offer enjoyable rides for different skill levels. For a moderate family adventure, consider routes like Château d'Ermenonville – View from the treetops loop from Ermenonville, which leads through dense pine forests.
While the guide does not specify dog-friendly trails, generally, dogs are permitted in French national forests on a leash. It's always recommended to check local signage or the official website for Forêt d'Ermenonville for specific regulations regarding dogs on trails to ensure a pleasant and compliant visit.
The sandy composition of the soil in Forêt d'Ermenonville makes the trails particularly enjoyable in autumn and winter when other areas might be muddy. While the sand can be softer in summer, the forest offers a unique riding experience year-round. The pine forests and heather undergrowth provide scenic backdrops in any season.
Yes, many of the mountain bike routes in Forêt d'Ermenonville are designed as circular loops. For example, you can try the Château d'Ermenonville – Château de Pontarmé loop from Ermenonville, a moderate 41.8 km path that navigates through the forest's distinctive sandy terrain and past historical landmarks.
While specific parking locations are not detailed in the guide, the routes often start and end near prominent landmarks like Château d'Ermenonville, suggesting parking facilities are available in these areas. It's advisable to check maps or local information for designated parking zones near trailheads.
The mountain bike trails in Forêt d'Ermenonville are highly rated by the komoot community, with an average score of 4.4 stars from over 300 reviews. More than 1,900 mountain bikers have explored the varied terrain, often praising the unique sandy landscapes, diverse flora, and engaging descents.
Absolutely. Beyond its natural beauty, Forêt d'Ermenonville is home to several historical and recreational attractions. You can visit the historic Chaalis Abbey with its ruins and museum, or the Château d'Ermenonville, nestled within a country-inspired park. The forest also features the Etang du Désert, a pond cherished by philosopher Jean-Jacques Rousseau.
Yes, Forêt d'Ermenonville offers several longer routes for those seeking extended rides. For instance, the Château d'Ermenonville – Handlebar width loop from Ermenonville is a 41.7 km trail, and the Château d'Ermenonville – Château de Pontarmé loop from Ermenonville is a moderate 41.8 km path, both offering varied forest paths and scenic exploration.
Forêt d'Ermenonville stands out due to its distinctive sandy soils and the prevalence of Scots pines, giving it a unique "Mediterranean" feel. The sandy terrain provides excellent riding conditions even when other areas are muddy. The forest also features impressive sandstone blocks and the natural "Mer de Sable" (Sea of Sand), offering a landscape unlike many other French forests.


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