In the Chevreuse Valley
Walker 
19.24 km
+327 m
-332 m
6h 25
Difficult
Departure from Chevreuse (Yvelines)
A beautiful hike to discover the beautiful sights of the Chevreuse valley: the Chatillonmill, the castle of Dampierre, the blacksmith’s, the villages of Fourcherolles, Senlisse and Choisel, Méridon castle, the village of Chevreuse and its small bridges along the Yvette, and Château de la Madeleine.
Walks near Château de la Madeleine
Following the Bièvre river through Saint-Quentin-en-Yvelines in Igny
Walker 
19.30 km
+20 m
-109 m
5h 35
Moderate
Departure from Montigny-le-Bretonneux (Yvelines)
The upstream part of this series of three hikes devoted to the Bièvre river. A very pleasant walk along the river and its bodies of water, in a mostly rural setting. A hike from station to station, which can be used to adjust the length depending on the weather conditions or desires of the hikers.
Bièvre Valley - Château de Versailles
Walker 15.20 km
+207 m
-148 m
4h 55
Moderate
Departure from Igny (Essonne) (Essonne)
Hike connecting Igny (Essonne) to the Palace of Versailles. The route follows the Bievre, and 80% of the route is on roads through forests. A calm, cool walk with scenery that will leave you with a unique souvenir.