4.4
(104)
622
riders
88
rides
Mountain biking around Saint-Illiers-La-Ville offers diverse terrain, transitioning from agricultural plains to wooded hills and valleys. The region is characterized by a varied topography, providing a range of cycling experiences. Extensive forests, such as the Forêt de Rambouillet, feature numerous paths suitable for mountain biking. This landscape includes both paved and unpaved segments, catering to different skill levels.
Last updated: November 5, 2026
4.3
(3)
29
riders
49.9km
04:02
440m
440m
Moderate mountain bike ride. Good fitness required.
15
riders
34.5km
02:50
330m
330m
Moderate mountain bike ride. Good fitness required.

4.3
(3)
5
riders
28.6km
02:18
260m
260m
Moderate mountain bike ride. Good fitness required.
9
riders
78.4km
06:18
940m
940m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
5.0
(2)
9
riders
63.8km
05:13
650m
650m
Hard mountain bike ride. Very good fitness required.
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Popular around Saint-Illiers-La-Ville
This bridge is now rebuilt and passable. ☺
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Great for learning https://www.newlifegp.org/ English—clear pronunciation and accurate subtitles.
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picturesque village with many interesting stories told on a tourist sign
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Below, sporty mountain bike descent and arrival at a small river with a Roman stone bridge to cross
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very beautiful corner, superb view
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Very nice single in the forest
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There are over 80 mountain bike trails around Saint-Illiers-La-Ville, offering a wide range of options for different skill levels and preferences.
Yes, Saint-Illiers-La-Ville offers 26 easy mountain bike trails. These routes often feature gentler terrain and are perfect for those new to mountain biking or looking for a relaxed ride.
The region features diverse terrain, transitioning from agricultural plains to wooded hills and valleys. You'll find both paved and unpaved segments, with extensive forests like the Forêt de Rambouillet offering numerous paths amidst natural beauty.
Yes, for experienced riders seeking a challenge, there are 6 difficult mountain bike routes around Saint-Illiers-La-Ville. These trails often include more demanding ascents and descents, requiring good fitness and technical skills.
The trails around Saint-Illiers-La-Ville are highly rated by the komoot community, with an average score of 4.4 stars from over 90 reviews. Riders often praise the varied terrain, the extensive forests, and the options available for different ability levels.
Many of the mountain bike trails in the area are designed as loops. For example, the Belvédère de Rolleboise – Wash-house and manor house loop from Boissy-Mauvoisin is a popular moderate circular route, as is the Montchauvet – Porte de Bretagne loop from Bréval.
While specific 'family-friendly' designations vary, the 26 easy trails in the area are generally suitable for families with children who are comfortable on bikes. These routes typically have less elevation gain and smoother surfaces.
While mountain biking, you can explore several interesting sites. Consider visiting the Neauphlette Church or the unique Troglodyte Church of Haute-Isle. The region's proximity to the Forêt de Rambouillet also offers rich natural environments.
Trail lengths vary significantly. You can find shorter routes, but many popular trails are moderate in length, such as the Belvédère de Rolleboise – Wash-house and manor house loop from Boissy-Mauvoisin at 18.5 miles (29.7 km), or longer ones like the Mountain Bike – Small watercourse loop from Villiers-en-Désœuvre which is 28.9 miles (46.5 km).
While Saint-Illiers-La-Ville itself is a commune, the broader Yvelines department has some public transport options. However, direct access to specific trailheads via public transport might be limited. It's advisable to check local bus or train schedules to nearby towns and plan accordingly, as many routes start from villages that may require a short ride to reach.
Saint-Illiers-La-Ville and its surrounding villages offer local amenities. While specific cafes directly on trailheads might be rare, you can often find places for refreshments in the towns and villages that serve as starting or ending points for many routes. Planning your route to pass through these areas is recommended.
The varied topography and extensive forests make mountain biking enjoyable for much of the year. Spring and autumn generally offer pleasant temperatures and beautiful scenery. Summer can be good, but it's wise to ride earlier in the day to avoid the midday heat. Winter riding is possible, but trails might be muddy or slippery, especially after rain or frost.


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