The competition started on 4 April 1909, and concluded on 8 April 1909, with the final, held at the O'Donnell, in Madrid, in which Club Ciclista de San Sebastián lifted the trophy for the first time ever with a 3–1 victory over Español Madrid.

The Basque goalscorers were George McGuinness, Charles Simmons and Miguel Sena.

[1][2] Club Ciclista de San Sebastián are the predecessors of Real Sociedad.

After winning the cup trophy, on 7 September 1909 the players of Club Ciclista founded a new in club in San Sebastián, called Vasconia, later changing the name to Real Sociedad.

The trophy of the 1909 Copa del Rey is in Real Sociedad's museum.