1978 Torneo Descentralizado Wikipedia
The 1978 Torneo Descentralizado, the top category of Peruvian football (soccer), was played by 16 teams. The national champion was Alianza Lima.
The season was divided into 2 stages. A Preliminary Tournament contested in two groups; this was a friendly tournament to keep teams occupied as the National Team was preparing for the 1978 World Cup Finals. The second stage was the Decentralized (league tournament); the top 2 qualified for Copa Libertadores and the last team was relegated.