2011 Categoría Primera B season

The 2011 Categoría Primera B season is the 22nd season since its founding and is officially called the 2011 Torneo Postobón for sponsorship reasons.

Promotion/relegation playoff
As the second worst team in the relegation table, América had to play a two-legged tie against Patriotas, the 2011 Categoría Primera B runner-up. As the Primera A team, América will play the second leg at home. The winner will be determined by points, followed by goal difference, then a penalty shootout. The winner will be promoted/remain in the Primera A for the 2012 season, while the loser will be relegated/remain in the Primera B.