4.6
(380)
1,829
hikers
128
hikes
Bus station hiking trails in Forêt Des Quatre Piliers traverse a vast 1100-hectare forest characterized by diverse woodlands of oak, pine, and beech. The terrain features gentle elevation changes, open fields, and small streams, providing varied landscapes for hikers. Notable natural features include the central Étang de la Pimardière and the biodiverse Étang de Béhoust. Sandy paths are common in pine forest sections, offering comfortable hiking conditions.
Last updated: July 6, 2026
3.0
(2)
15
hikers
11.1km
03:00
160m
160m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
6
hikers
18.3km
04:52
190m
190m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.0
(1)
3
hikers
12.3km
03:15
130m
130m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
6
hikers
11.5km
03:02
110m
110m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3
hikers
5.23km
01:21
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Beautiful castle with a beautiful forest nearby 😉
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Pond where it is very pleasant to walk in the heart of the forest of the four pillars.
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Pleasant in spring when the plants are awakening :)
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a pretty little village not to be missed in the Yvelines: you wouldn't think you were in the suburbs of Paris!
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Beautiful forest between Garancières and Bazainville with many trails, perfect for gravel or mountain biking. Don't miss the small, very wild Pimardière pond. A small path allows you to go around it.
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Magnificent region, castles every ten kilometers!
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There are over 100 hiking trails in Forêt Des Quatre Piliers that are easily accessible from bus stations, allowing you to explore the diverse landscapes without a car. These routes cater to various fitness levels and interests.
Yes, Forêt Des Quatre Piliers offers around 30 easy trails accessible by bus, perfect for beginners or those looking for a relaxed stroll. An excellent option is the Behoust Castle – Étang de la Pimardière loop from Béhoust, which is just under 6 km and features minimal elevation gain.
The forest boasts a rich variety of landscapes. You'll encounter extensive woodlands with oak, pine, and beech trees, often leading to sandy paths. Many routes also feature serene water bodies like the Étang de la Pimardière and the biodiverse Étang de Béhoust, alongside open fields and small streams. The terrain includes gentle rolling hills, adding interest to your walk.
Absolutely. Many trails lead you past the tranquil Étang de la Pimardière, a central and peaceful attraction. The Étang de Béhoust is another beautiful spot known for its biodiversity. Some routes, such as the Four Pillars Forest – Behoust Castle loop from Bazainville, also offer glimpses of historical sites like Behoust Castle.
Generally, dogs are welcome on trails in Forêt Des Quatre Piliers. However, it's always best to keep them on a leash, especially in areas with wildlife or near water bodies like the Étang de Béhoust, which is known for its exceptional biodiversity. Please ensure you clean up after your pet to preserve the natural environment for everyone.
Yes, many of the bus-accessible trails are circular, allowing you to start and end your hike at the same bus stop. Popular circular options include the Four Pillars Forest – Étang de la Pimardière loop from Bazainville (around 8.7 km) or the slightly longer Étang de la Pimardière – Four Pillars Forest loop from Millemont (around 12.3 km).
Forêt Des Quatre Piliers is beautiful year-round. Spring brings lush greenery and blooming flora, while autumn offers stunning foliage. Summer is ideal for longer hikes, and even winter can be magical with crisp air and quiet paths. The varied tree species ensure dynamic scenery throughout the seasons.
Yes, if you're looking for a greater challenge, there are moderate and even a few difficult routes available. For instance, the Four Pillars Forest – Behoust Castle loop from Bazainville covers over 18 km with significant elevation gain, offering a more strenuous experience. Some sections of the long-distance GR® 22 trail also pass through the forest.
The area is highly rated by the komoot community, with an average score of 4.6 stars. Reviewers often praise the extensive network of well-maintained trails, the peaceful atmosphere, and the diverse natural beauty, particularly around the ponds and through the varied woodlands. The convenience of bus access is also frequently highlighted.
While the forest itself is a natural escape, some villages where bus stops are located, such as Bazainville or Millemont, may offer local amenities like small cafes or bakeries. It's advisable to check local listings for specific opening times and availability before your visit, especially if you plan to rely on them for refreshments.
Given the varied terrain, including sandy paths and potential gentle inclines, comfortable hiking shoes are recommended. Dress in layers suitable for the season, as forest temperatures can vary. Always bring water, snacks, and a fully charged phone. A map or GPS device is also useful, though many trails are well-marked.


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