![](/images/other/stat-length.png)
![Trail Walking Châteaufort - Vallées de la Mérantaise et de la Bièvre - Photo](https://media.geolcdn.com/t/1900/400/ext.pjpeg?maxdim=2&url=https%3A%2F%2Fservices.sitytrail.com%2FGeolivesWS%2FDownloadMedia.ashx%3FTrailID%3D101793%26Media%3D2067_4.jpg)
Vallées de la Mérantaise et de la Bièvre
tracegps
User
![Length](/images/other/stat-length.png)
![Max alt](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_altitude_max_24dp.png)
![Uphill gradient](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_den_pos_24dp.png)
![Km-Effort](/images/other/stat-length.png)
![Min alt](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_altitude_min_24dp.png)
![Downhill gradient](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_den_neg_24dp.png)
![Boucle](https://static1.geolcdn.com/siteimages/upload/files/16400158638029165_repeat_loop_refresh_sync_direction_icon.png)
![Walking](https://static1.geolcdn.com/sitytour/trail-icons/101.png)
5h00
Difficulty : Medium
![Scan this QR Code to open this trail in the SityTrail application](https://capi.geolives.com/qq0zvz2zws4bq2lad0pu/sitytour/trails/101793/qr.png?size=200)
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About
Trail Walking of 25 km to be discovered at Ile-de-France, Yvelines, Châteaufort. This trail is proposed by tracegps.
Description
Remonter la vallée de la Mérantaise depuis Châteaufort, puis monter sur le plateau et longer le golfe de Guyancourt. On rejoind la vallée de la Bièvre jusqu’aux Loges en Josas, après avoir traversé les arcades du Viaduc de Buc. Remonter sur le plateau de Saclay puis rejoindre Châteaufort par le versant rive gauche de la Mérantaise.
Positioning
Comments
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