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France
Ile-de-France
Évry

Oncy-Sur-École

The best running trails around Oncy-Sur-École

4.4

(127)

6,968

runners

252

runs

Jogging around Oncy-Sur-École offers diverse natural landscapes within the French Gâtinais Regional Nature Park. The region is characterized by alternating woods, valleys, rivers, glades, and agricultural plains, providing varied terrain for runners. The École River meanders through a picturesque valley, offering tranquil routes, while Mount Grippon presents more challenging rocky slopes and elevation changes. Extensive forest areas ensure shaded paths and immersion in nature.

Best jogging routes around Oncy-Sur-École

  • The most popular jogging route is Running loop from Milly-la-Forêt,…

Last updated: July 13, 2026

4.0

(2)

147

runners

#1.

Milly-la-Forêt Village Center – Milly-la-Forêt loop from Milly-la-Forêt

24.1km

02:55

210m

210m

Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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Hard

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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4.7

(10)

43

runners

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

4.8

(5)

11

runners

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Popular around Oncy-Sur-École

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Tips from the Community

bellevillerider
August 26, 2025, Le Cyclop de Jean Tinguely

A temple of Dada art!

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Nicolas Weber
August 11, 2024, Le Cyclop

Nice surprise

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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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Randopiednue
February 9, 2024, Milly la foret

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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SimonWicart
April 11, 2023, Le Cyclop

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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Impressive and surprising animated statue in the middle of the woods. The Cyclop is open from April to October every weekend, and from Wednesday to Sunday in July-August, from 10:30 a.m. to 6 p.m.

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Johann Moine
September 29, 2022, Le Cyclop

Magnificent gigantic and very playful sculpture

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Frequently Asked Questions

What kind of natural landscapes can I expect on running routes around Oncy-sur-École?

Jogging routes in Oncy-sur-École are set within the French Gâtinais Regional Nature Park, offering a rich variety of landscapes. You'll find alternating woods, serene valleys, the picturesque École River, open glades, and agricultural plains. The extensive forest areas provide ample shaded paths, while the École River valley offers tranquil, flat routes. For a more challenging run, Mount Grippon presents rocky slopes and elevation changes.

Are there many running trails available in the Oncy-sur-École area?

Yes, the Oncy-sur-École area boasts a wide selection of running trails. There are over 200 routes available, catering to various fitness levels. You'll find 20 easy routes, over 180 moderate options, and more than 30 challenging trails for experienced runners.

What do other runners say about the trails in Oncy-sur-École?

The running routes in Oncy-sur-École are highly regarded by the komoot community, with an impressive average rating of 4.5 stars from over 100 reviews. More than 6,000 runners have used komoot to explore the varied terrain, often praising the diverse natural settings and well-maintained paths.

Are there any easy or beginner-friendly running routes in Oncy-sur-École?

Yes, there are several easy running routes suitable for beginners or those looking for a gentler pace. The area offers 20 routes classified as easy, providing a great way to enjoy the natural beauty without significant elevation changes. For example, the Running loop from Oncy-sur-École is a moderate 3.7-mile (5.9 km) path that offers a direct experience of the immediate natural surroundings.

Can I find circular jogging trails in Oncy-sur-École?

Many of the running routes around Oncy-sur-École are designed as circular loops, allowing you to start and finish at the same point. This includes popular options like the Running loop from Milly-la-Forêt, which is 5.9 miles (9.4 km), and the Château de Milly-la-Forêt loop from Milly-la-Forêt, a 6.3-mile (10.2 km) trail.

Are there any interesting landmarks or attractions to see along the running routes?

While running, you can encounter several points of interest. The Château de Milly-la-Forêt loop from Milly-la-Forêt passes by the historic Château. You might also integrate a visit to nearby attractions like Milly-la-Forêt itself, or even the monumental sculpture known as 'The Cyclop' by Jean Tinguely, which can be part of longer routes like the Le Cyclop by Jean Tinguely loop from Milly-la-Forêt. Other notable sights in the broader area include Fleury-en-Bière Castle and Domaine de Courances.

What is the best season for running in Oncy-sur-École?

Oncy-sur-École offers excellent running conditions throughout much of the year. The extensive forest areas provide shade during warmer months, making summer jogging pleasant. Spring and autumn bring beautiful foliage and comfortable temperatures, ideal for exploring the diverse landscapes of the French Gâtinais Regional Nature Park. Winter running is also possible, though conditions may vary.

Are there any running routes with viewpoints in the area?

While specific routes are not highlighted solely for viewpoints, the varied terrain, especially around Mount Grippon, offers elevated sections that provide scenic vistas over the surrounding glades, forests, and the École River valley. The natural features of the Gâtinais Regional Nature Park ensure picturesque scenery throughout your run.

Where can I find parking for the running trails in Oncy-sur-École?

As Oncy-sur-École is a rural commune within a regional nature park, parking is generally available near trailheads or in the village center. For routes starting from Milly-la-Forêt, parking options would be available within that town. It's advisable to check specific route details on komoot for recommended starting points and parking information.

Are there any dog-friendly running trails in Oncy-sur-École?

The natural environment of Oncy-sur-École and the French Gâtinais Regional Nature Park is generally welcoming to dogs. Many of the trails are suitable for running with your canine companion, provided they are kept under control, especially in protected natural areas. Always ensure to follow local regulations regarding pets in natural parks.

How long are the jogging trails around Oncy-sur-École?

The jogging trails in Oncy-sur-École vary significantly in length. You can find shorter routes, such as the Le Cyclop by Jean Tinguely loop from Milly-la-Forêt at 3.4 miles (5.4 km), to longer options like the Coquibus Pond loop from Milly-la-Forêt, which is 6.5 miles (10.4 km). The average duration for many routes is around 1 to 1.5 hours, but there are options for quick runs or longer endurance training.

Can I reach the running trails by public transport?

Oncy-sur-École is a rural area, so public transport options might be limited compared to larger towns. However, nearby towns like Milly-la-Forêt may offer more connections. It's recommended to check local bus schedules or regional transport services for the most up-to-date information on reaching Oncy-sur-École and its trailheads.

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