Overview

Segunda División B was the third level of the Spanish men's football league system for several decades. The competition served as the bridge between the nationwide Segunda División above and the more regionalised Tercera División below. It combined clubs with full‑time professional status, semi‑professional teams and reserve sides of higher‑level clubs.

Competition format and season

Seasons generally ran from late summer to spring. Clubs were placed in several geographically arranged groups to limit travel and encourage local rivalries; for long periods the league commonly comprised four groups of about 20 teams each. At season's end the highest finishing teams entered a multi‑round promotion play‑off to compete for places in the Segunda División, while lower‑placed teams were relegated to the Tercera División.

Promotion, relegation and reserve teams

Promotion was decided by a play‑off system that rewarded group winners and other top finishers with a chance to move up. Reserve teams (so‑called B teams) were eligible to compete in Segunda División B but could not be promoted to a division occupied by their parent club; if a first team was relegated, adjustments affected the reserve side's status. Relegation affected several clubs each season and fed the competitive fluidity of the Spanish pyramid.

History and reorganisation

Established in 1977 to reorganise the national pyramid, Segunda División B remained Spain's third tier until a major restructuring of the league system took place in 2021. The Royal Spanish Football Federation introduced a new three‑division professional structure: the Primera División RFEF became the new third level, followed by Segunda División RFEF and Tercera División RFEF. Many clubs that had competed in Segunda División B were allocated across these new levels.

Significance and characteristics

The league was notable for its diversity: long‑established clubs seeking a return to higher levels, ambitious smaller teams, and the development sides of elite clubs all competed together. Matches could be highly competitive and unpredictable, and the play‑off phase was particularly intense for clubs chasing promotion. For players, Segunda División B often provided a crucial step in professional development.

Notable facts

  • It is commonly referenced for historical records and archives of Spanish football; an overview of the competition and its seasons can be found on league pages such as the Segunda División B page.
  • The league formed part of the wider Spanish football system, linking national and regional competitions and shaping club progression for decades.