The competition started on 16 April 1905, and concluded on 20 April 1905, with the last group stage match, in which Madrid FC lifted the trophy for the first time ever with two victories over San Sebastián Recreation Club and Athletic Bilbao. The three teams entered in the competition disputed the tournament by playing against each other in two games, with a third not played.
^Athletic Bilbao, who had lost their first match of any edition of the Copa del Rey, declined to play this match and travelled home. In the event, Madrid had already won the Cup.
