Go to Col du Pilon on the Route Napoléon, between Grasse and Saint-Vallier-de-Thiey. Park opposite the ZAC du Pilon. There are a few parking spaces near marker 56, which marks the start of the hike.
(S/E) Follow the track from the "Castellaras de la Malle" sign, then the path that climbs north-northwest (yellow markings).
(1) At marker 57, climb to the right. Go around a ruined building and follow the path to marker 58.
(2) Turn right and follow the path to marker 58a (yellow markings). Leave the return path that descends along the ridge line on your right, if you see it.
(3) Take the path that climbs to the right towards Castellaras. Cross the site heading to the left. On this section, it is best to follow the red markings, which have been repainted recently.
(4) At the exit of Castellaras, follow the path that descends for a few metres, then climbs back up towards the south (red markings) and reaches a fork.
(5) Leave the red-marked path to the left, which leads to Le Doublier, and continue straight ahead, keeping your eyes on a large cairn at the top of La Colle (old yellow markings). Once you reach the top of the Colle, you can enjoy a 360° panorama of Le Thiey, the Colle du Maçon, the Château de la Malle, and to the south, the Estérel and the coast. Turn right and descend along the ridge towards the north-west. The trail is not very well marked, but there are a few partially faded yellow markers. This will take you back to the path you took on the way up.
(2) Follow the ascent route in reverse to return to the Col du Pilon (S/E).