Routes are marked by colors 

Routes are marked by colors (green, blue, red and black) and each one has a different difficulty degree. Aspects such as length, steepness, and technical demand are all taken into account to assign a color to the route or trial. In Busturialdea we have 11 routes: 1 green, 5 red, and 5 black, and three links that run across a varied ecological and natural landscape.