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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

4.3

(9)

32

riders

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

04:07

50.2km

570m

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: May 21, 2026

Tips

Includes a segment in which cycling is not permitted

After 1.15 km for 85 m

Waypoints

A

Start point

Train Station

Get Directions

1

722 m

Small houses by the water

Highlight • Other

2

1.88 km

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

8.72 km

Bois du Boulay

Forest

4

10.8 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

5

16.9 km

Small Steep Path

Highlight (Segment) • Trail

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

Translated by Google •

Tip by

6

33.8 km

Nice descent

Highlight (Segment) • Other

7

36.8 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

40.4 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 …

Translated by Google •

Tip by

9

40.5 km

Saint-Yon Church

Highlight • Religious Site

Very beautiful chapel, but there is a small dimension.

Translated by Google •

Tip by

44.3 km

Place de l'Église

Forest

B

50.2 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

30.8 km

7.14 km

5.10 km

4.20 km

2.57 km

227 m

111 m

Surfaces

17.0 km

12.1 km

7.92 km

7.23 km

4.27 km

1.60 km

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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

Wednesday 1 July

26°C

12°C

20 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

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