Πέτρα-Κοκκινοπηλός-Πέτρα

A very difficult trail with large altitude differences, in the heart of mount Olympus. Its length is 54.4 km, while it reaches a maximum altitude of 1.427 meters. It is a circular trail, starting and ending at the village of Petra. Approximately in the middle of the trail, is the village of Kokkinopilos. The trail passes through the rocky surface of the Plateau of the Muses.