El pastor impide que el ganado se desvíe de su ruta. La cañada real debe tener 90 varas castellanas (72,22 metros) de anchura. Son trazados de largo recorrido, regulados y protegidos para el uso de pastores, por lo que el ganado tiene derecho frente a aquello que no respete su trazado y uso oficial: carreteras, edificios, etc. - The shepherd stops the herd from wandering off the droveway. A Spanish droveway, or Cañada Real, must have a width of ninety Castilian varas (72,22 metres), and is a route that covers long distances. They are protected and regulated by law in order to be used by shepherds, therefore livestock have rights over everything that does not respect the trail's official use: roads, farms, buildings, etc.