Start / return (parking):
- Train station of Virieu sur Bourbre (Val de Virieu)

Come by train to Val de Virieu and go for a diversified tour. The start will be along the valley of the Bourbre, on a flat road without great difficulty. You will then cross the D73 to go up to Saint Ondras and then on the hill to more than 600 m altitude until you come back down to the town of Valencogne. At the end of the route, before the last big descent to return to Val de Virieu, you can stop at the castle of Virieu and the museum of the Galoche.
Finish your outing by stopping to taste the Bigallet products and take a gourmet break at La Guinguette to eat. Along the route, do not forget to look up to observe the neo-Byzantine church of Chassignieu, the greenery and the surrounding mountains.