The Peña Prieta Sky Race is a mountain running event held in Vega de Liébana, Cantabria, northern Spain. The primary event is a 38 km trail run, with an 8 km non-competitive option also available, noted as a popular walk. This event operates under the Peña Prieta Trail name and is intended for runners seeking a challenging day over steep Cantabrian terrain, distinct from flat road races.
The course begins in Vega de Liébana and proceeds towards Peña Prieta. One significant climb is reported through Cubil de Can en route. Local accounts characterize the race as demanding, with previous victors including Víctor García and Mayka Bueno. The shorter 8 km route allows walkers and less competitive participants to engage in the event without completing the full 38 km mountain course.