From Gex, take the D1005 towards Col de la Faucille. Park at the pass near the Montrond telecombi.
(S/E) With your back to the ski lift, turn right, then right again to pass under the ski lift and begin the climb on a marked trail that winds through the forest. Stay on the path going uphill until you reach the second passage under a ski lift. After this, keep to the right until you reach the road. The surface is mainly crushed stone, with numerous steps. Cut across the road twice, then continue along the path to the summit of Petit Montrond at an altitude of 1,533 metres.
(1) After enjoying the view at Petit Montrond, head towards the access road and follow it to the left.
(2) Take the first path on the right, which runs along the top of the ridge towards the south, following the yellow markings. Stay on the path along the ridge until you reach the Sentier de la Vie de Chaux after a slight descent.
(3) Continue straight ahead (south-southwest). Climb to an unnamed peak, then descend slightly in the same direction.
(4) Turn right and continue downhill.
(5) At an intersection, turn left. Climb, keeping south-west, ignoring a path on the left (steep shortcut to the summit).
(6) At the next intersection, turn left again and climb to the summit (panoramic view).
(7) Turn around to descend via the sameGR® trail to reach the Vie de Chaux crossroads.
(3) Take the path downhill to the left, still onthe GR®, cross the forest road and pass under the Gelinottes cable car.
(8) Then continue straight ahead on the red and white marked path to the Maréchaude road.
(9) Continue along this road to return to the starting point (S/E).