Spanish football league system
The Spanish football league system refers to the system in Spanish club football that consists of several football leagues bound together hierarchically by promotion and relegation. Unlike the English and Scottish football federations, the Spanish football federation allows reserve teams to compete in the main football league system, as is the case in most of Europe; however reserve teams are not allowed to compete in the same tier as their senior team, and no reserve team has thus competed in the top flight, Primera División.
La Liga is the highest level in the Spanish football league system and is operated by the LFP.
La Liga 2 is the second highest level in the Spanish football league system and is also operated by the LFP.
The Segunda Division B is the third highest level in the Spanish football league system and is operated by the Royal Spanish Football Federation.
The Tercera Division is the fourth highest level in the Spanish football league system and is operated by the Royal Spanish Football Federation and 17 regional federations.
Starting at Level 5, each of the 19 regional federations of RFEF run their regional league pyramid under their own jurisdiction.
Level
League(s)/Division(s)
1
La Liga
(LaLiga Santander)
20 clubs
2
La Liga 2
(La Liga 1|2|3)
22 clubs
3
Segunda División B Group 1
20 clubs
Segunda División B Group 2
20 clubs
Segunda División B Group 3
20 clubs
Segunda División B Group 4
20 clubs
...
Wikipedia