Gravel Route, beginning and ending at the "Polo C - Serra d'Ossa no Centro de Cycling de Serra d'Ossa", located in Borba. Circular route that accompanies route 11 in the first 5.5km. It starts in the south zone of the Rio de Moinhos, passing the stream and visiting the modest village of São Gregório. Follow the vineyard, after Quinta do Zambujeiro, turn right and head towards Nora, where you will find some support services. Then turn right and follow the olive grove, passing Barro Branco to go to Rio de Moinhos, where you arrive at the entrance door on the side of Borba.