From the road just north of Colle Vaccara, along up the path to the track heading north. Sunny and hot. Then traversing round the unnamed peak to the NW, taking the smaller bifurcation off the track through a grassy area with shepherds' shacks, then SE along the pleasant grassy plain. At the end of this, began the ascent to the top of San Marino, cutting up through the wood on faint paths. After the summit, walked NE along ridge to meet the main track again, below Colle Santo before ascending that.