From the village of Vonzo, follow the paved road heading west and downhill towards the hamlet of Pianardi / Bocchetto. This section is a necessary detour from the original 325B trail—which previously passed through Candiela and crossed the Vassola stream—due to a bridge collapse in the summer of 2025.

Upon reaching Pianardi, where the pavement ends, join trail 323A as it enters beautiful beech woods. Staying at an altitude between 1,200 and 1,600 meters, the path reaches the hamlet of Frassa, notable for its unique chapel with an uphill-facing entrance. After a slight descent, you arrive near the characteristic alpine pasture of Mea. Here stands the Bec di Mea (1,550 m), a striking granite spire carved by ancient glaciers that offers a stunning view over the entire valley. Access to the summit is aided by a walkway and a fixed rope, requiring a few easy scrambling moves (maximum Grade II).

Returning to the main path, follow a forest track that soon narrows back into a trail leading to the picturesque village of Alboni, perched on a plateau overlooking Val Grande.

Following trail 322, descend towards the village of Pialpetta. A short detour into the town center allows you to restock at the last grocery shops in the valley. In the locality of Migliere, the route meets the GTA (Great Alpine Traverse); follow it for a short stretch across the Stura stream. Immediately after the bridge, leave the GTA track to follow the trail climbing the orographic right bank of the valley. A gentle 5-kilometer walk leads to the historic village of Forno Alpi Graie, situated at the very head of Val Grande.