4.5
(902)
4,616
riders
343
rides
Mountain biking around Bullion offers a diverse landscape characterized by dense woodlands, rolling terrain, and scenic river valleys. The region features a network of trails that often incorporate historical viaducts and tranquil ponds, providing varied riding experiences. These routes navigate through natural forests and open areas, with elevations that present both gentle climbs and more challenging ascents. The area's geography is well-suited for mountain biking, with many trails following natural contours and offering engaging rides.
Last updated: July 5, 2026
4.0
(4)
50
riders
35.2km
02:53
360m
370m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.0
(8)
37
riders
30.3km
02:01
250m
250m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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5.0
(2)
12
riders
24.4km
01:58
250m
250m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
5.0
(1)
12
riders
27.8km
02:09
200m
200m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
8
riders
42.3km
03:28
370m
370m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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superb waterfalls, superb associative hostel with exhibition, café restaurant on the banks of the torrent, warm welcome
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The turtle head welcomes you at the end of the hike with its two big, friendly eyes!
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Pretty castle well glimpsed at the heart of a beautiful gravel ride between Choisel and St Rémy
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Great view when you are at the top of the viaduct!
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The river flows through the narrow rocky chaos: it almost feels like you are in the mountains.
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A lovely passage towards the abbey and waterfalls of Vaux-en-Cernay.
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A former mill on the road
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Bullion offers a wide selection of mountain bike trails, with over 350 routes available. These range from easy paths suitable for beginners to more challenging trails for experienced riders.
Yes, Bullion has a good selection of easier trails. There are 81 easy mountain bike routes, providing gentle climbs and varied landscapes suitable for beginners or families looking for a less strenuous ride.
Experienced riders will find plenty of challenging options in Bullion. The region features 84 difficult mountain bike trails, including routes like Route aux Cerfs – Remarkable oak loop from Bonnelles, which offers significant elevation changes and explores dense forested areas.
Mountain bike trails in Bullion vary in length. For example, a moderate route like Fauvettes Viaduct – Fauvettes Viaduct loop from Bonnelles is about 19.2 miles (30.9 km), while a longer moderate option such as Singletrack on Balcony – Route aux Cerfs loop from Bullion extends to 33.7 miles (54.3 km).
Yes, many mountain bike trails in Bullion are designed as loops. Examples include the moderate Viaduc de la Prédécelle – Cernay Pond loop from Bullion, which takes you past a viaduct and a pond, and the challenging Route aux Cerfs – Remarkable oak loop from Bonnelles.
The trails often incorporate historical viaducts and tranquil ponds. You can also explore natural attractions such as Vaux‑en‑Cernay Lake or the waterfall at the Petit Moulin in Vaux-de-Cernay. The region is known for its dense woodlands and rolling terrain.
Yes, the Bullion area is rich in natural and historical points of interest. You might encounter landmarks like the Château du Marais, various scenic lakes such as Golden Pond, and unique geological features like the Rock Formations Near Maincourt-sur-Yvette.
The komoot community highly rates mountain biking in Bullion, with an average score of 4.5 stars from over 800 reviews. Riders often praise the diverse landscape, including dense woodlands, rolling terrain, and scenic river valleys, as well as the variety of trails that cater to different skill levels.
The region's dense woodlands and varied terrain make it enjoyable across multiple seasons. Spring and autumn offer pleasant temperatures and vibrant scenery, while summer provides longer daylight hours. Winter riding is possible, but trail conditions may vary, especially after rain or snow.
While some popular routes can see more traffic, Bullion's extensive network of over 350 trails means it's often possible to find quieter paths, especially on weekdays or by exploring some of the less-trafficked moderate and difficult routes. The region's natural forests and open areas provide ample space.
Yes, the region offers natural monuments including waterfalls. You can find the waterfall at the Petit Moulin in Vaux-de-Cernay, which can be incorporated into a mountain bike tour for a scenic stop.
The rolling terrain and varied elevations throughout Bullion's trails often provide scenic viewpoints. While specific named viewpoints are not detailed, the routes frequently navigate through natural forests and open areas, offering expansive views of the surrounding landscape and river valleys.


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