From the Mariailles refuge (S), head due south for about 1 km before making a 90° turn due east. The path is theGR®® shared by routes 10-36 and 83. Route 83 is the Grande Randonnée Transfrontalière, along which the entire hike will take place.
(1) Continue eastwards via the Col Vert.
(2) Continue to the 1,964-metre mark.
(3) The path turns north-west to join the junction with the path leading to the Arago refuge.
(4) Turn right and head for the refuge.
(5) Continue north-east, then, as the switchbacks begin, head almost due north. Pass through the Brèche Durier and, via the secured chimney, reach the summit of the Canigou.
(6) Descend northwards to reach Pic Joffre.
(7) Turn 90° 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).

