RIAÑO TRAIL RUN is a mountain 3-day mountain race run in the natural of Natural Park of Fuentes Carrionas y Fuente Cobre – Montaña Palentina, Picos de Europa Regional Park and Regional Park of Montañas de Riaño y Mampodre. The race can be run individually or by teams of two runners.
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Information about the event is available in : Spanish