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Routes
Mountain biking trails
France
Ile-de-France
Palaiseau
Égly

Lac d'Olainville – Saint-Yon Church loop from Égly

Routes
Mountain biking trails
France
Ile-de-France
Palaiseau
Égly

Lac d'Olainville – Saint-Yon Church loop from Égly

Moderate

4.2

(10)

33

riders

Lac d'Olainville – Saint-Yon Church loop from Égly

04:00

48.8km

550m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: July 17, 2026

Tips

Includes segments that go up or down a series of steps

You may need to carry your bike.

After 107 m for 8 m

After 48.8 km for 8 m

Waypoints

A

Start point

Train Station

Get Directions

1

985 m

Lac d'Olainville

Highlight • Lake

After having traveled about twenty kilometers along the barley starting from Morsang sur orge, this lake offered us a magnificent landscape, hidden between the trees.
It was difficult to leave this place to come back home!

Translated by Google •

Tip by

7.87 km

Bois du Boulay

Forest

3

9.97 km

Baville Castle

Highlight • Castle

17th century castle with a large park. Difficult to access, via a somewhat muddy paved road

Translated by Google •

Tip by

4

16.1 km

Small Steep Path

Highlight (Segment) • Trail

Departure 107 m, arrival 160 m over a length of 630 m.

Translated by Google •

Tip by

5

33.0 km

Nice descent

Highlight (Segment) • Other

6

35.5 km

The church of Saint-Sulpice-de-Favières is a magnificent jewel. Located in the heart of the village, it occupies a strategic location, at the start of many hikes and trails in the forest.

Translated by Google •

Tip by

7

36.0 km

Nice view of the village and the church of Saint-Sulpice de Favière, before entering the hard part of the coast towards the forest...

Translated by Google •

Tip by

8

39.0 km

Porte des Bourdeaux...

Highlight • Other

The place takes its name from Saint-Yon, a Christian martyr beheaded by Roman soldiers on this hill. The church and the Porte des Bourdeaux are the remains of a village whose strategic position made it possible to monitor the Orge valley and the Brie plain.

Translated by Google •

Tip by

9

39.1 km

Saint-Yon Church

Highlight • Religious Site

Very beautiful chapel, but there is a small dimension.

Translated by Google •

Tip by

42.9 km

Place de l'Église

Forest

B

48.8 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

28.8 km

7.61 km

5.62 km

4.01 km

2.48 km

179 m

111 m

Surfaces

18.3 km

10.4 km

10.1 km

6.24 km

3.57 km

134 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (160 m)

Lowest point (50 m)

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Weather

Powered by Foreca

Thursday 16 July

27°C

18°C

45 %

Additional weather tips

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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