Career
Club career
Cilaurren played club football in Spain for Arenas Club de Getxo and Athletic Bilbao. During the 1938-1939 season he played for Club Deportivo Euzkadi in the Mexican league. In 1939 he joined River Plate in Argentina where he played 19 times, scoring 3 goals.
International career
From 1937 to 1939 he was part of the Basque Country national football team which toured Europa and the Americas.