4.6
(1672)
14,106
hikers
306
hikes
Hiking around Buno-Bonnevaux offers diverse landscapes within the Gâtinais Français Regional Natural Park. The area features the Essonne River valley with marshes and woodlands, contrasting with eastern slopes that rise nearly 260 feet (80 m). These slopes present sand and sandstone formations, including rounded rock outcrops and sections reminiscent of the Forest of Fontainebleau with pine trees and sandy patches. Many trails follow the Essonne River, connecting villages and passing through forests and cultivated plateaus.
Last updated: July 4, 2026
4.9
(7)
46
hikers
18.1km
04:47
150m
150m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.3
(4)
8
hikers
12.7km
03:22
120m
120m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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3.0
(1)
5
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(2)
5
hikers
17.0km
04:28
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
8
hikers
7.84km
02:01
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Yes, indeed pretty Patelin :-)
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The cyclops visit is not free, 12 euros entry but it lasts 45 minutes and is very interesting. Limit of 25 people at a time. Please note that photos inside are prohibited. I recommend the first visit at 10:30 a.m. (less crowded)
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The trail moves on to the main essentials The hall In 1479, by a special grace from Louis The North-South facing Hall, 46 m long, 16 m wide and 13 m high, covers a total surface area of 730 m2. 48 oak pillars, resting on “dice”-cut stone bases, support a chestnut frame typical of Ile-de-France at that time; this frame presents to the north (on the rue Langlois side) a “pavilion” farm. Today, La Halle is still the site of a market on Thursday afternoons. The square, the houses gathered all around, bear witness to the great commercial activity which already reigned in the region 500 years ago. La Halle has been classified as a Historic Monument since 1923. Bonde Castle is located near the town center of Milly-la-Forêt, Built near an artificial island in the l'École river to the west of the Notre-Dame collegiate church, its park is bordered to the west by the course of the river which forms a moat to the north protecting the châtelet. History Built in the 12th century by the lords of Milly, the castle was ruined during the English siege in 1432. At the end of the 15th century around 1475, owned by Admiral Louis Malet de Graville, it was rebuilt and enlarged. What was then the keep became the entrance gatehouse, the drawbridge was replaced by a permanent stone bridge and a gate closed access between the northern defense tower and the governor's house. A square courtyard was surrounded by a wall and had in the center a chapel dedicated to Saint Valentine. The castle was successively the property of Hugues III de Bouville, Olivier V de Clisson, Jean II de Montmorency, Jean-François de Faudoas d'Averton, Marc-Antoine Front de Beaupoil de Saint-Aulaire and Pierre Marie of Lau d’Allemans. In the 19th century, the towers of the chatelet were enhanced with brick battlements and a slender roof. In 1859 the Corne bridge was rebuilt near the castle washhouse which served as a watering trough for the animals. At the end of the 20th century the mills along the river were demolished. In 1964, the Bonde washhouse downstream of the river which was part of the estate was rehabilitated. On December 20, 1972, the castle was partly listed as a historic monument. The park was listed in 1991 for its fences, canals and paths. the house of Jean Cocteau. Entrance to the J. Cocteau house [This 17th century residence, flanked by turrets, was formerly called the Governor's House. It corresponds to an old outbuilding of the castle in front of which the vassals came to pay homage and faith to their lord. Jean Cocteau bought this house with Jean Marais in 1947 and lived there until his death. Notre-Dame de l’Assomption Church Founded in the 11th century, the former chapel of the castle, it was rebuilt around 1485 on the orders of Admiral de Graville in the Gothic style of the 13th and 14th centuries. The bell tower, 57 meters high, dates from the 11th century in its lower part and from the 12th and 13th centuries in its upper part. The arch of the main portal in the primitive Romanesque style comes from an old church in Milly (Saint-Pierre or Saint-Jacques). On the east side of the bell tower - Place Grammont side - the arms of Admiral de Graville are still visible. Many works of sacred art are found inside the church. The church was listed as a Historic Monument in 1926. The dovecote; Located on the old triangular square of the dovecote cul de sac, this old building was part of the Domaine du Moustier, property of Fulbert I, lord of Milly and officer at the court of Dagobert I in the 7th century. Destroyed in 1432 or 1433, the complex included a vast farm. According to a count in 1792 it had around 1200 niches. Only the lords held the right to build these premises designed for breeding. The Moustier de Péronne gate is one of the oldest vestiges of Milly and dates from the 7th century. It provided access to the moustier (monastery in old French) owned by Fulbert I, who obtained the land of Milly from Dagobert I. His son Wulfran was born there around the year 635. Entering religion, he became the apostle of the frieze (Netherlands), then bishop of Sens before retiring to Saint Wandrille where he died in 720.
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Miily-la-Forêt is a charming country town, in the heart of Gatinais. Ideal as a base from which to visit the forest of Fontainebleau and its famous rocks!
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This sculpture, made of concrete and iron, represents the fantastic creature from Greek mythology which gave its name to the work. 22.5 meters high, the sculpture is a project by artists Jean Tinguely and Niki de Saint Phalle, carried out between 1969 and 1994. On site, you can also discover two other works: the Face of Mirrors and the Tribute to the Deportees. Visiting all the monuments is completely free.
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Charming little washhouse in the center of Milly-la-Forêt which was still in use until the 1960s!
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Magnificent gigantic and very playful sculpture
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There are over 280 hiking trails in the Buno-Bonnevaux area, offering a wide range of options for all skill levels. You'll find 105 easy routes, 97 moderate routes, and 86 difficult routes to explore.
Hiking in Buno-Bonnevaux offers a diverse mix of landscapes within the Gâtinais Regional Nature Park. You'll encounter trails that alternate between dense forests and expansive open fields, picturesque sections along the Essonne River valley with its footbridges, and wooded valleys like Vautretion. The eastern slopes feature unique sand and sandstone formations, including rounded rock outcrops and areas reminiscent of the Forest of Fontainebleau with pine trees and sandy patches.
The trails around Buno-Bonnevaux are highly rated by the komoot community, with an average score of 4.7 stars from over 1,600 reviews. Hikers frequently praise the varied terrain, the peaceful river valleys, and the distinctive sandstone outcrops that make each route unique. Over 13,000 hikers have used komoot to explore this area.
Yes, Buno-Bonnevaux offers several easy routes suitable for families. For a gentle introduction to the area, consider the Château de Bonnevaux – Château de Gironville loop from Gironville-sur-Essonne. This easy 7.6 km trail has minimal elevation gain, making it a pleasant walk for all ages.
Many trails in the Gâtinais Regional Nature Park, where Buno-Bonnevaux is located, are dog-friendly. However, it's always recommended to keep your dog on a leash, especially in protected areas, near livestock, or during nesting seasons. Always check local signage for specific regulations within the park.
Yes, many of the trails around Buno-Bonnevaux are circular, allowing you to start and end at the same point. For example, the Church of Courances loop from Boigneville is a moderate 12.6 km circular route that takes you through varied landscapes.
The Buno-Bonnevaux area is rich in both natural and historical features. You can encounter Neolithic polishing stones and old sandstone quarries. Notable landmarks include the Cross of Lorraine on the Maquisards' Pignon and the charming village of Milly-la-Forêt with its Market Hall. The The Cyclop, a monumental sculpture, is also a significant point of interest.
Parking is generally available in the villages that serve as starting points for many trails, such as Maisse, Boigneville, and Gironville-sur-Essonne. Specific parking information is often detailed on individual route descriptions on komoot.
While Buno-Bonnevaux is primarily accessed by car, some villages in the region, like Maisse, have train stations (RER D line) which can provide access to certain trailheads. It's advisable to check local public transport schedules and connections to specific starting points before planning your trip.
The Gâtinais Regional Nature Park is beautiful year-round. Spring brings blooming wildflowers and lush greenery, while autumn offers stunning foliage. Summer is ideal for longer days, though some trails might be less shaded. Winter can be peaceful, especially after a light snowfall, but always check weather conditions.
Yes, many trails in the area follow the picturesque Essonne River. For a pleasant riverside experience, consider the Singletrack Along the Essonne loop from Maisse. This moderate 7.9 km route leads you directly through riverside landscapes.


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