The Primera División works similar to the Tercera Federación of Spanish football.

It is the fifth tier as well and it is divided into fifteen groups, corresponding to the Autonomous communities of Spain excepting one of the groups that is shared by Basque Country, La Rioja and Navarre.

The best teams are promoted to Tercera FEB (formerly known as Liga EBA), since 2015–16 season without playing any promotion playoffs against other Autonomous communities groups.

In some Autonomous communities, the first qualified is considered the Regional amateur champion.

(Baloncesto Zuera) Source: [1] 24 teams divided in two groups.

Source:[4] Until 2013, the group was shared with the Region of Murcia.