4.5
(283)
5,823
riders
270
rides
Road cycling around Boullay-Les-Troux, located in the Essonne department of the Île-de-France region, offers varied terrain for cyclists. The area sits at the junction of the Hurepoix plateau and the Chevreuse Valley, featuring gentle undulations, wooded valleys, and agricultural fields. This rural setting provides routes that often alternate between forests and open fields, with some paths utilizing former railway lines.
Last updated: July 12, 2026
4.7
(33)
533
riders
84.9km
03:50
810m
810m
This moderate 52.7-mile road cycling route in Parc Naturel Régional de la Haute Vallée de Chevreuse features challenging climbs and scenic v
4.8
(9)
164
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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186
riders
127km
05:38
1,120m
1,120m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
4.4
(5)
83
riders
70.2km
03:06
490m
490m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
80
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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very beautiful church
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very beautiful village
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Great castle. A small collaborative cafe has opened right next door. You have to check the opening hours.
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The whole village is well worth a visit, there is also a very good restaurant.
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There are over 270 road cycling routes available around Boullay-Les-Troux. These routes cater to various skill levels, including easy, moderate, and difficult options, allowing cyclists to explore the diverse landscapes of the Hurepoix plateau and the Chevreuse Valley.
The terrain around Boullay-Les-Troux is quite varied, situated at the junction of the Hurepoix plateau and the Chevreuse Valley. You'll encounter gentle undulations, wooded valleys, and expansive agricultural fields. Many routes utilize former railway lines, offering pleasant paths through forests and open areas. The region provides a mix of challenging climbs and more relaxed sections.
Road cycling routes in this region often pass by significant landmarks and natural features. You can explore historical sites like the La Madeleine Castle, offering panoramic views, or the impressive Dampierre-en-Yvelines Castle. Natural highlights include the Ponds of Parc des Côtes Montbron and the picturesque waterfall at the Petit Moulin in Vaux-de-Cernay. You might also encounter unique geological formations like the Rock Formations Near Maincourt-sur-Yvette.
Yes, the Boullay-Les-Troux area, particularly within the Chevreuse Valley, offers several challenging climbs. Notable ascents include the Milon-la-Chapelle Wall and the famous Côte des 17 Tournants, which are popular among local cyclists seeking a workout. Routes like La Celle-les-Bordes – The 7 Turning Points loop from Saint-Rémy-lès-Chevreuse are rated as difficult and feature significant elevation gains.
The spring and autumn months are generally ideal for road cycling around Boullay-Les-Troux. During these seasons, the weather is typically mild, and the natural landscapes, with their changing foliage, are particularly scenic. Summer can also be pleasant, though it's advisable to start early to avoid the midday heat. Winter cycling is possible, but be prepared for colder temperatures and potentially wet conditions.
While many routes involve varied terrain and some climbs, there are options suitable for families, especially those utilizing former railway lines which tend to have gentler gradients. Look for routes described as 'easy' on komoot, which often pass through tranquil agricultural fields and wooded areas, providing a pleasant experience for all ages.
The road cycling routes around Boullay-Les-Troux are highly rated by the komoot community, with an average score of 4.5 stars from over 200 reviews. Cyclists often praise the diverse landscapes, which seamlessly blend rural charm with scenic wooded valleys and open fields. The well-maintained paths, including those converted from old railway lines, and the opportunity to visit historical châteaux and natural monuments are also frequently highlighted.
Yes, many of the road cycling routes around Boullay-Les-Troux are designed as loops, allowing you to start and finish at the same point. Examples include the popular Cernay-la-Ville waterfalls – Bullion Church loop from Saint-Rémy-lès-Chevreuse and The 7 Turning Points – Hollande Pond loop from Saint-Rémy-lès-Chevreuse. These circular routes make planning your ride and return journey straightforward.
Given the rural nature of Boullay-Les-Troux and its proximity to larger towns like Saint-Rémy-lès-Chevreuse, parking is generally available in village centers or designated parking areas near popular trailheads. It's advisable to check the starting point of your chosen route on komoot for specific parking recommendations.
Boullay-Les-Troux is located in the Île-de-France region, and public transport options, particularly the RER B line to Saint-Rémy-lès-Chevreuse, can provide access to the broader Chevreuse Valley area. From there, you can cycle to Boullay-Les-Troux. It's recommended to check the specific public transport operator's rules regarding bikes during peak and off-peak hours.
While Boullay-Les-Troux itself retains a rural character, many road cycling routes pass through charming villages in the wider Chevreuse Valley. These villages often have local cafes, bakeries, or small shops where you can stop for refreshments. Planning your route with komoot allows you to identify potential stops along the way.
The routes vary significantly in distance and duration. For instance, the moderate Chevreuse Hills Classic covers about 85 km and takes around 3 hours 50 minutes. Shorter, easier routes are also available, while more challenging ones like Étang de Saint-Hubert – Boullay-les-Troux Climb loop from Saint-Rémy-lès-Chevreuse can extend over 100 km and require several hours to complete.


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