Reach the Col du Granier via the D912. Park at the pass, in front of the restaurant or on the other side of the road (start of the walk).
(S/E) The walk starts opposite the restaurant, where the route to Mont Joigny is signposted. Follow the path for about 1 km until you reach the fork on the right.
(1) Leave the main path (otherwise you will go to the barns of Joigny) and turn right onto the path that climbs up through the grass. The climb is quite steep, especially towards the end as you reach the ridge.
(2) Continue left on the easy path that climbs to the summit.
(3) Come out onto the ridge, pass Mont Joigny and arrive at the summit (1,556 m), where Mont Blanc is visible in good weather.
(4) The summit is marked by a cross and offers a beautiful view of the Chartreuse. Descend towards the Col de la Gorgeat. The descent is a little steep and can be slippery in wet weather at the start.
At the first intersection, continue straight ahead towards the pass, which is about 200m away.
(5) At the Col de la Gorgeat, turn left towards the Granges de Joigny. Continue until you reach them.
(6) Continue straight ahead on the almost flat path that leads back to the initial crossroads.
(1) Follow the same route as on the way there to return to the starting point (S/E).