Montjay Tunnel – Méridon Castle loop from Orsay-Ville
Montjay Tunnel – Méridon Castle loop from Orsay-Ville
5.0
(1)
29
riders
03:21
44.2km
560m
Mountain biking
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is accessible with public transport.
Last updated: June 20, 2026
Tips
Includes a segment that is highly dangerous
A part of this route comprises highly technical, difficult, or hazardous terrain. Specialist equipment and prior experience is required.
After 15.1 km for 29 m
Waypoints
Start point
Train Station
Get Directions
2.13 km
Highlight • Natural
Translated by Google •
Tip by
3.87 km
Highlight • Trail
Translated by Google •
Tip by
7.47 km
Forêt communale de Gif-sur-Yvette
Forest
13.3 km
Réserve naturelle du val et coteau de Saint-Rémy
Nature Reserve
15.1 km
Highlight • Bridge
Translated by Google •
Tip by
15.4 km
Highlight (Segment) • Trail
Translated by Google •
Tip by
16.6 km
Highlight • Other
Translated by Google •
Tip by
19.6 km
Highlight • Castle
Tip by
21.7 km
Highlight • Trail
Tip by
22.4 km
Highlight (Segment) • Trail
Translated by Google •
Tip by
44.2 km
End point
Train Station
Way Types & Surfaces
Way Types
18.4 km
7.71 km
7.01 km
5.90 km
4.79 km
356 m
109 m
Surfaces
17.7 km
11.3 km
8.67 km
3.62 km
2.53 km
226 m
160 m
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Elevation
Highest point (170 m)
Lowest point (60 m)
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Weather
Powered by Foreca
Saturday 11 July
35°C
22°C
0 %
Additional weather tips
Max wind speed: 21.0 km/h
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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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