The starting point is  Piazza al Serchio. From the parking lot, where an old steam locomotive stands, follow the asphalt road for the Passo dei Carpinelli.

After a few km, turn right onto the road leading to Giuncugnano and, across the village, keep left for Passo di Tea and Monte Argegna. Cross a lawn, where the Sanctuary of Nostra Signora della Guardia lies.

From here you can enjoy a wonderful panorama of the Apuan Alps. Continue to descend, following the asphalt road up to the Passo dei Carpinelli.

Near a small chapel, take a dirt road leading to the village of Agliano and downhill to the lake of Gramolazzo. Skirting the lake  and crossing a short tunnel, you reach the village of Nicciano. Here, following downhill the GT path to the right, arrive at the village of San Michele, continuing the road back to the starting point.