4.3
(726)
3,587
riders
393
rides
Mountain biking in Forêt De L'Isle-Adam is characterized by its diverse terrain and extensive network of trails. This sprawling forest, located just outside Paris, features lush woodlands, hidden ponds, and paths along the Oise River. Riders can expect varied elevation changes, from gentle slopes to more challenging climbs, making it suitable for different skill levels.
Last updated: June 2, 2026
5.0
(2)
3
riders
29.2km
01:59
350m
350m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
2
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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5.0
(4)
22
riders
35.0km
02:58
430m
430m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.0
(2)
17
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.3
(3)
10
riders
21.2km
01:41
210m
210m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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What is to be remembered from this route is the passage through the Carnelle forest. However, there are too many roads on the Isle Adam and along the Oise. No particular difficulty.
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The Trois Sources pond is a beautiful place built on a former quarry which breathes nature and where you can observe many birds, moorhens, swans, ducks and barnacle geese.
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Discover the picturesque charm of the banks of the Oise at L'Isle-Adam. Stroll along the tranquil riverbanks, where nature meets history. Stroll along the shaded paths, enjoy the welcoming terraces and let yourself be seduced by the bucolic landscapes. Isle-Adam is an invitation to relaxation and discovery, where every moment is an enchanted break. Come breathe the fresh air, admire the gently gliding barges and savor the sweetness of life by the water.
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Small, slightly technical uphill single which digs, which digs with the years. You just have to release the brakes when going downhill 🤣
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pretty lake hidden in the middle of the forest
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Access point on the north side of the Montmorency forest (Béthemont-la-Forêt 95) it's a steep climb to arrive on the plateau and have access to the slopes groomed by the ONF Access via Map: https://maps.app.goo.gl/hUVJH1KrpihtY4po9 3745+CRH Béthemont-la-Forêt
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Forêt De L'Isle-Adam offers a vast network of mountain bike trails, with over 380 routes recorded on komoot. These trails cater to various skill levels, including 123 easy routes, 242 moderate routes, and 18 challenging routes for experienced riders.
The forest features diverse terrain, from lush woodlands and dense paths to trails running along the Oise River. You'll encounter varied elevation changes, including gentle slopes and more challenging climbs. Some routes may even require pushing your bike on steeper sections. The area is known for its well-marked trails.
Yes, Forêt De L'Isle-Adam has numerous family-friendly options. Many easy routes are suitable for all fitness levels. For example, the La Butte des Landes – Cycle route along the castle loop from Nerville-la-Forêt is an easy 13.4 km path that offers a gentle ride through scenic landscapes, perfect for families.
Generally, dogs are welcome in Forêt De L'Isle-Adam, but it's always best to keep them on a leash, especially in areas with wildlife or other visitors. Ensure your dog is well-behaved and that you clean up after them to preserve the natural environment for everyone.
Forêt De L'Isle-Adam is rich in natural and historical sights. You can discover hidden ponds like the serene Étang de la Justice, or historical points such as the Étoile de Conti, an ancient hunters' meeting point. The forest also features unique geological sights like the Table de Cassan, a large hunting table carved from a limestone monolith. Keep an eye out for Remarkable trees and enjoy the lush greenery.
Absolutely. Forêt De L'Isle-Adam offers routes with significant elevation changes and technical sections. A challenging option is the Viewpoint over the forest – High-speed descent loop from Montsoult - Maffliers, a 27.2 km trail with varied terrain and descents. Another demanding route is the Marie Pond – Tour du Plumet loop from Montsoult - Maffliers, which features nearly 500 meters of elevation gain over 30.5 km.
The mountain bike trails in Forêt De L'Isle-Adam are highly rated by the komoot community, with an average score of 4.3 stars from over 660 reviews. More than 3,000 mountain bikers have used komoot to explore the varied terrain, often praising the diverse woodland, well-marked paths, and the serene escape from city life.
The forest offers beauty year-round. In late April and early May, the forest floor is adorned with wildflowers, wild hyacinths, and lily of the valley, making it a particularly picturesque time. However, the diverse woodland and well-maintained trails are enjoyable throughout the spring, summer, and autumn months. Be mindful of potential muddy conditions after heavy rain.
Yes, many of the mountain bike routes in Forêt De L'Isle-Adam are designed as loops, allowing you to start and finish at the same point. Examples include the Remarkable trees – Forest Climb loop from Nerville-la-Forêt and the Chemin de la Petite Plaine – Montée de la Pierre Turquaise loop from Montsoult - Maffliers, both offering comprehensive tours of different sections of the forest.
Forêt De L'Isle-Adam is conveniently accessible from Paris, with direct train lines making it suitable for a day trip. While specific parking details for trailheads are not provided, the forest's popularity suggests various access points and parking areas are available around its perimeter, particularly near towns like Nerville-la-Forêt and Montsoult - Maffliers, which serve as common starting points for routes.
The provided information does not indicate any specific permits required for mountain biking in Forêt De L'Isle-Adam. However, it's always advisable to respect local signage, stay on marked trails, and be mindful of other forest users such as hikers and horseback riders to ensure a pleasant experience for everyone.


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