Starting with the 2008–09 season, the four group winners had the opportunity to promote directly and become the overall Segunda División B champion.
The two losing semifinalists entered the playoff round for the last two promotion spots.
The six winners advanced with the two losing semifinalists to determine the four teams that entered the last two-legged series for the last two promotion spots.
The draw were held in the RFEF headquarters, in Las Rozas (Madrid), on 11 May 2009, 16:30 CEST.
The aggregate winners will be promoted and qualified to the 2009–10 Segunda División B Final.