Ermua is located in Gasteiz / Vitoria city, Spain at the 43.1833, -2.5 coordinates. Distance from Ermua to other cities. are listed below, click on the city name to find distance between. Distance from Ermua to Bilbao 36 km, to San Sebastian 45 km, to Barakaldo 42 km. The green marker indicates the location of Ermua.