The best MTB trails around Les Ulis
4.4
(1141)
7,438
riders
415
rides
Last updated: November 3, 2025
4.4
(10)
64
riders
1. Montjay Tunnel – Pastoral Cow Pasture loop from Les Ulis
51.1km
03:51
520m
520m
Expert mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.7
(3)
61
riders
2. Aigrefon wood – Viaduc des Fauvettes loop from Saint-Jean-de-Beauregard
34.8km
02:55
580m
580m
Expert mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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3.8
(5)
60
riders
3. Viaduc des Fauvettes – Aigrefon wood loop from Les Delâches
45.6km
03:46
730m
730m
Expert mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.1
(9)
49
riders
4. Beautiful descent – View of the Petite Vallée loop from Bures-sur-Yvette
32.2km
02:29
390m
390m
Intermediate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(1)
57
riders
5. Path along the Ru des Vaux – Small bridge loop from Les Ulis
82.6km
06:12
790m
790m
Expert mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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