It opposes the twenty best clubs of Spain in a series of thirty-eight days.
Real Madrid defend their title against, 19 other teams including 3 promoted second division.
The Spanish Football Cup 2017-2018, or King's Cup, is the 115th edition of this competition. The final takes place on April 21, 2018.
83 teams of first, second and third division take part in the competition. The affiliated teams (reserve teams) do not participate. The winner of the King's Cup qualifies for the Europa League 2018-2019 group stage and the 2018 Spanish Supercup.
