GR de pays des Yvelines: the great hike across the 78

Published by Margot de Sortiraparis · Photos by Graziella de Sortiraparis · Updated on June 17, 2025 at 10:31 a.m.
Île-de-France, a land of hikers? It could well be, especially in the Yvelines department, where a long-distance hiking trail crosses the département.

Would you like to cross the Yvelines from Épernon in the Eure-et-Loir department to Saint-Illiers-la-Ville? In any case, this is the route proposed by the Fédération Française de Randonnée (French Hiking Federation ) on the Grande randonnée de pays (GR de Pays) trail in the Yvelines département.

All in all? On an itinerary of around 70 kilometers, you'll cover the Yvelines from south to north, passing quickly through the Eure-et-Loir département. Small villages, country churches, lavoirs... Hikers will pass through Houdan, Bréval, Montchauvet and Saint-Illiers-la-Ville. The good news is that the level of this GR is very accessible to all, with little change in altitude.

Houdan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les YvelinesHoudan, ville médiévale et balade historique dans les Yvelines Houdan, medieval town and historical walk in Yvelines
Just a Navigo ride away from Paris, in the Yvelines department, you'll discover the medieval town of Houdan, with its surprisingly well-preserved medieval remains, including a keep, ramparts and old inns. [Read more]

Along the way, you'll find a wide range of accommodation, including gîtes, campsites and chambres d'hotes, should you wish to spend several days on the trail. The route in gpx format (so you can follow it on your smartphone) is also available free of charge on theMaRando application, the official FFR app. All you have to do is put on your hiking boots and you're off to discover the GR de Pays des Yvelines!

Practical information

Dates and Opening Time
From June 17, 2025 to December 31, 2028

× Approximate opening times: to confirm opening times, please contact the establishment.

    Prices
    Free

    Official website
    www.mongr.fr

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