Eighty teams participated, distributed in four groups of twenty clubs each.
[1] On 11 March 2020, the season of Segunda División B was suspended due to the coronavirus COVID-19 pandemic in Spain.
[2] On 6 May 2020, the Royal Spanish Football Federation announced the premature end of the league, revoking all relegations and planning an eventual promotion playoff to be played if possible.
This is a list of attendance data of the teams that give an official number.
They include playoffs games: Notes: 1: Team played last season in Segunda División.