Start from Roybon tourist information centre. Take the D20 through Dionay, then to Saint-Marcellin via Chatte.
Head for Saint-Vérand on the D518 past the Château de Quincivet. Continue on the same road through Varassieux, Chasseley then turn left on the D156 to return to Roybon.

From Roybon on the forest-covered plateau of Chambaran, this route takes you to Saint-Marcellin. It's the ideal itinerary for gourmet cyclists. Stop and taste the most famous regional products of Isère: Saint-Marcellin cheese, walnuts and Royans ravioles.

Labelled "Vélo et Fromages" (Bicycle and Cheese), this itinerary combines cycling tourism with local cheese exploration. Discover the famous Saint-Marcellin cheese (PGI) by bike!
Good plans : Saint-Marcellin cheese, walnuts and ravioles: the Saint-Marcellin region is home to several stars of the gourmet Isère region. - Saint-Marcellin is a small, round and creamy cheese made from cow's milk. The maturing process produces two types of Saint-Marcellin: dry, typical of local tradition; and soft, with a melting texture due to a longer maturing process. www.fromage-saint-marcellin.fr - The Grenoble walnut, awarded recognition for its geographic origins (AOP) in 1938, is grown in the lower Isère valley. Three varieties are eligible for the AOP: parisienne, mayette and franquette. They can be eaten alone or with other food such as cheese or chocolate. Local chefs and pastry cooks use them in a wide range of recipes. www.aoc-noixdegrenoble.com - Ravioles are like raviolis, small square pillows of dough stuffed with cheese and herbs. They are famous all over France. The technique for cooking them is very precise: they are plunged in boiling water or broth for one minute, and no more. You can buy them in Isère at Les Ravioles du Dauphin in Chatte. www.ravioles-du-dauphin.com

Admission fee : Free access.

Opening : From 01/01 to 31/12. Subject to favorable weather.

Area : Bièvre Isère