Barruelo, Brañosera y el Collado Pamporquero . Aguilar de Campoo

The most demanding route of the stage starts by heading north towards the historic villages of Barruelo de Santullán and Brañosera, the birthplace of Spain's first town hall. From there, the ascent begins to the highest point of the entire stage: the Collado de Pamporquero, at 1,620 meters, offering spectacular views and a feeling of conquest for the cyclists. The descent, dynamic and varied, passes through several picturesque villages before returning to Aguilar de Campoo. An intense day, perfect for those seeking a challenge surrounded by history and pure nature.