The starting point is the urban center of Canfranc Estación, where is the entrance to the old international railway station that was connecting the Canfranc Valley with the French slope between 1928 and 1970, when the track stopped working permanently. The historic building was declared an Asset of Cultural Interest and is currently a hotel and exhibition center. The trail runs along the main street of the town in a southerly direction and at the exit it turns to the left on the bridge of the Canal Roya hydroelectric plant that crosses the Aragón river. The path of the trail continues along the Picaube dirt track. At the beginning of the lane there is a panel with local routes and information on trail running itineraries in the Canfranc Valley, identified by colors and numbering. The route chosen to go up to the summit of La Moleta and return through Iserias and the Canal de Izas is number 28. There are also QR codes and a general map. The mountain track draws some sharp curves, first the turnoff for the Ruta de los Melancólicos appears on the left and shortly after the path indicated to La Moleta and the Ibón de Ip leaves on the right. The main lane continues straight ahead towards Picaube and Casita Blanca, an old forest refuge built during reforestation on the slopes of Los Arañones. On the hills along the way there are remains of old military forts from the last two centuries of warfare.