Stage 1: Albarracín - Villar del Cobo

This first stage begins in the outskirts of Albarracín, a medieval town set on a hill, in a bend formed by the River Guadalaviar, which once served as a natural moat. It boasts an abundance of artistic and historic monuments, including religious buildings and its houses, streets and squares, which perfectly reflect the population's ability to adapt to the rugged terrain.

The Trail heads northwest passing through an opening in the wall surrounding the village, along the road to Valdemán, which gradually climbs to the top of the hill. Spectacular views of the medieval town can be seen from here.

The landscape seems barren and devoid of life, but nothing could be further from the truth. The moorland is inhabited by many animal and plant species that have adapted to the prevailing environmental conditions.

The path continues along the upper reaches of the moorland, surrounded by farms and a few patches of juniper (Juniperus thurifera), until the Rochilla farmhouse, located on the right bank. The descent into the Moñigueros Ravine starts here. After about 1.5 km, the Trail arrives at a junction and turns left onto a wide track leading to Puntal de Antonio. This stage of the Tagus Nature Trail passes through the Sabinar de Monterde de Albarracín SCI. The landscape changes as the journey continues, with junipers giving way to pines (Pinus spp.).

The path continues downward until it merges with the A-1512 for a few metres, then continues left and crosses a bridge over the River Guadalaviar. It continues along the right bank until it crosses the river again, heading back north until it eventually reaches the town of Torres de Albarracín. On the river, next to this last bridge, are Fuente de Veguilla and its recreational area, with benches, tables and riverside trees that provide shade for rest, and even some refreshment, before visiting the town.

The stage continues from Torres de Albarracín, retracing the path to cross the bridge again, where it continues south, climbing up Fuentes Gully. At the next junction, the route turns right and skirts around Las Fuentecillas Hill.

The path continues up and down La Loma Valley until it reaches the River Guadalaviar Canyon, where rocky cliffs and crags form a unique landscape. The flight of the Griffon Vulture (Gyps fulvus). can be enjoyed from the natural balconies. This landscape is protected under the Estrechos del Guadalaviar SCI.

The path merges onto the road to Villar del Cobo, next to Zarramora, for a few kilometres, until it reaches a sharp bend from where the route continues along a track that passes over the Rollo Stream. At the next intersection, it turns right in a north-westerly direction to return to the road, and continues for a few metres until it reaches Villar del Cobo, the endpoint of this stage.