It was the longest season ever in Spanish football. The league had two phases. In the first one, all 18 teams played each other twice (home and away). At the end of the first phase, the first six teams qualified for the championship group (Group A), the next six qualified for the intermediate group (Group B) and the last six qualified for the relegation group (Group C). In the second phase, teams played only against teams of the same group twice (home and away) and carried their first phase record. The last three in relegation group should have been relegated at the end of the season, but in the middle of the season it was decided that the
Primera División and
Segunda División would be expanded to 20 teams. In the end, the last three teams of the relegation group played a playoff and only
Racing de Santander was relegated. ==Regular season==