From the Mariailles refuge (S), head south for about 1 km before turning 90° east. The trail is theGR® shared by nos. 10-36 and 83. No. 83 is the Grande Randonnée Transfrontalière, which is the route for the entire hike.
(1) Continue eastwards via the Col Vert.
(2) Continue to elevation 1964.
(3) The trail turns north-west to reach the junction with the trail leading to the Arago refuge.
(4) Turn right and head for the refuge.
(5) Continue north-east and then, at the start of the switchbacks, head almost north. Pass the Brèche Durier and climb the secured chimney to reach the summit of Canigou.
(6) Descend northwards to reach Pic Joffre.
(7) Make a 90° turn to the right, walk alongside the Fontaine de la Perdrix and then a small lake before reaching the Cortalets plateau and the refuge of the same name (E).

