The Sella River is a river located in northern Spain, primarily flowing through the region of Asturias. It is approximately 70 kilometers long and is known for its scenic beauty, winding through lush green valleys and mountainous terrain. The river originates in the Picos de Europa mountain range and eventually empties into the Bay of Biscay. The Sella River is famous for its annual canoeing competition, the Descenso Internacional del Sella, which attracts participants from around the world. This event celebrates the river's natural landscape and promotes outdoor activities, making the Sella a popular destination for adventure enthusiasts and nature lovers alike.