The GR 36 trail crosses the Natural Park of the Sierra de Espadán, a mountain belt, from NW to SE in the last spurs of the Iberian System. This mountain range extends between the basins of the Mijares and Palancia rivers, in the south of the province of Castellón and its highest peaks are La Rápita (1,103 m) and El Espadán (1,099 m). From La Vilavella to Montanejos, there is a total distance of more than 65 kilometres that goes through the towns of Eslida, Aín, Veo, Alcudia de Veo and Torralba del Pinar. In Montanejos there is a connection with GR 7 and with the GR 160 "Camino del Cid".