The GR 33 trail connects the coast with the interior of the province of Castellón, and connects Castellón de la Plana with Sant Joan de Penyagolosa, where it joins the GR 7. It goes through the municipalities of Castellón de la Plana, Borriol, Vilafamés, Les Useres, Atzeneta, Lucena, Xodos and Vistabella, with a profile characterised by saw teeth as it crosses all the mountains perpendicularly. At Les Useres, a reference point on this route, it joins the Camino dels Pelegrins de les Useres Natural Monument.