Romana - Cossoine (E 202)

The trail continues along the closed to traffic road Romana-Giave (former SP 77),   which then abandones in the Monte Sa pala 'e su frassu area, and then crosses the narrow Badu 'e ludu stream. Next goes up the hill towards Monte Rattari entering the former forestry site of Monte Traessu near the kaolin quarry in the Sa Rocca Manna area.

Continuing along the forest track in a northerly direction, the trail reaches after about 2.2 km the entrance to the short path that leads to the Sos Istrampos waterfall. After another 1.3 km the trail reaches the Paule Manna rest area, then continues along the forest track which after 2.3 km leads to the church of Santa Maria Iscala.

After leaving the church, the trail continues downhill; after about 3 km it reaches the archaeological area of nuraghe Aidu, where it is possible to water the horses and find an area equipped for the maintenance and charging of e-bikes. From here the trail crosses the state road and goes up towards Cossoine (about 100 meters of altitude difference). The trail ends near the SS 131, where another RES route begins:  the G 502, which leads to Bonorva.