The 2. Divisjon is the third highest level of the Norwegian football league system.There are 56 teams divided into four groups, and at the end of the season the winner of each group earns promotion to the second highest league, OBOS-Ligaen. The bottom three teams in each group are relegated to the Third Division.The 2. Divisjon is the highest league a reserve team can participate in, and only reserve teams from the Tippeligaen clubs (first tier) are allowed to enter.