Llanes is a municipality located in the province of Asturias in northern Spain. It occupies a coastal position at the extreme eastern edge of the province, stretching approximately 30 kilometers along the coastline.
The region is situated within the Costa Verde, an area characterized by its green mountains and 32 white sand beaches. Geographically, Llanes is bordered to the south by the limestone Sierra del Cuera ridge, which exceeds 1,100 meters in height, and lies to the north of the limestone karst mountains of the Picos de Europa.