Randonnée des Châtaignes

The Rando des Châtaignes is an annual recreational mountain bike and hiking event held at the Montbernier site in Bourgoin-Jallieu, in the Isère department of France. Organized by the association Anim' Montbernier, it traditionally offers three MTB loops of roughly 20, 35 and 50 km on forest trails and paths around ponds, alongside hiking options of 5, 10 and 15 km. The autumn edition is named for the chestnut groves crossed by the courses.