In the 2024–25 season, 36 teams compete in the Red and White Group of the TFF 2. Lig, each consisting of 18 teams. Teams ranked 16th, 17th and 18th of both groups will be relegated. Each group winner earns direct promotion to the TFF 1. Lig. Numbers 2 to 6 of each group enter the promotion play-off, the runner-ups joining the play-offs in the 3rd round. The play-off winners of the Red and White Group will face each other in a single decisive game on neutral ground to get the last ticket for promotion to the TFF 1. Lig.. In the 2009–10 season, the league contained 45 clubs spread out over 3 groups of 11 and one group of 12 teams. The league is played over two rounds. In the first round, ten teams in five groups play with other teams in their group, like a regular season. Top two teams of each group qualify to the "play-off group". They form a play-off league (consisting of ten teams) and play a regular season starting with zero points. The remaining eight teams in each group keep their points and they play again with each other. These new eight-teamed groups are called "classifying groups". The top two teams in each play-off group are
promoted to the
TFF First League. The three teams classified as third to fifth in each play-off group join the extra play-offs with top teams from each of the five classifying groups. These eight teams play a knockout competition (in a neutral venue) to determine the last team to be promoted. The bottom three teams of the classifying groups are
relegated to the
TFF Third League. The top four clubs from the Promotion Group of the TFF Third League are then promoted to the TFF Second League, while eight others play in a play-off. In the 2010–11 season, the league was played with 36 teams in two groups, white and red. The winners of each group are directly promoted to the
1. Lig (
TFF First League). In each group 2nd through 5th teams compete in the play-off with the respective team in the other group to determine the finalists. The finalists play a single game to determine the third team to be promoted. The bottom three teams in each group are relegated to the
3. Lig (
TFF Third League). ==League history==