4.6
(795)
6,673
hikers
432
hikes
Hiking in Bois Saint-Martin offers access to a nearly 300-hectare forest characterized by diverse natural environments, including long avenues of century-old trees, fern beds, and significant wetlands. The area features numerous ponds and bogs, which are unique to the Île-de-France region and support various amphibian and plant species. Large plains also distinguish this forest, which is classified as a "sensitive natural area" due to its ecological importance.
Last updated: August 18, 2026
4.2
(6)
33
hikers
12.1km
03:04
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.7
(7)
47
hikers
8.73km
02:13
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.5
(4)
34
hikers
5.53km
01:25
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.7
(3)
46
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
9
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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An important leper colony was founded near the source, thought to be miraculous, and which would become the Saint Lazarus fountain. Restored in 1969, this 19th century wash house opens directly onto the Morbras, facing a gentle slope which was used to water the cattle. All in millstone and covered with tiles, it could only be used in summer because of the too irregular variations of the river. (source https://www.cirkwi.com/fr/point-interet/1376272-lavoir-sur-le-morbras)
2
0
Pretty little pond in the heart of the forest.
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0
On the very old place called La Pierre, this fountain was built at the end of the 19th century. It overlooks the wash basin and its water comes from a deep water source. The washhouse was mainly used in winter, because the water there was less cold than that of Morbras. The name of the place perhaps evokes the ancient existence of a standing stone, perhaps a megalith. The hemispherical dome is engraved with the initials of a certain Hérault, who contributed to promoting the water source through the construction of this fountain.
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Bois Saint-Martin offers a wide selection of routes, with over 370 hiking trails to explore. These range from easy strolls to more moderate excursions, catering to various preferences.
The forest features diverse terrain, including long avenues bordered by majestic trees, verdant fern beds, and significant wetlands with numerous ponds and bogs. You'll also find large open plains, distinguishing it from other nearby forests in the Île-de-France region.
Yes, Bois Saint-Martin is well-suited for easy hikes and family outings. Many routes feature accessible forest paths, making them ideal for short excursions and those looking for kid-friendly options. For example, the Hiking loop from Les Yvris Noisy-le-Grand is an easy 3.4-mile trail.
Due to its classification as a 'sensitive natural area' and to protect delicate ecosystems, there are restrictions on walking dogs, even on a leash, in certain parts of Bois Saint-Martin. It's advisable to check local signage or official sources for specific regulations before your visit.
Bois Saint-Martin is known for its unique natural diversity. Hikers can discover numerous ponds and bogs, which are rare in the region and host various amphibian and plant species. The forest also boasts majestic, sometimes century-old trees, and is home to wildlife such as deer, foxes, red squirrels, and various protected bird species.
Yes, many of the trails in Bois Saint-Martin are designed as circular routes, offering convenient starting and ending points. A popular moderate option is the Hiking loop from Pontault-Combault, which passes through areas featuring the forest's characteristic wetlands.
Bois Saint-Martin offers a pleasant hiking experience throughout the year. Spring brings lush greenery and blooming flora, while autumn transforms the fern beds into golden hues. The varied landscapes make it enjoyable in different seasons, though specific conditions might vary.
Bois Saint-Martin is conveniently accessible from Paris via RER E, making it an easy escape into nature for those relying on public transportation. Specific access points will depend on your chosen starting location within the forest.
While the region research indicates accessibility, specific parking information for hikers is not detailed. It is generally recommended to check local maps or community resources for designated parking areas near popular trailheads before your visit.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 600 reviews. Hikers often praise the diverse natural environments, including the unique ponds and bogs, and the peaceful escape the forest offers from urban life.
Hikes in Bois Saint-Martin vary in length and duration. You can find shorter walks, like the Hiking loop from Les Yvris Noisy-le-Grand, which is 3.4 miles and takes about 1 hour 24 minutes. Longer, moderate routes, such as the Château des Tourelles Park – Chemin des princes loop from Le Plessis-Trévise, can be around 5.8 miles (9.3 km) and take over 2 hours.
Yes, Bois Saint-Martin is classified as a 'sensitive natural area.' This designation means certain regulations are in place to preserve its delicate ecosystems and biotopes. These may include restrictions on cycling and walking dogs, even on a leash, in specific zones. Always respect local signage and guidelines.


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