It was considered the third-highest division of the South Korean football league system before the K League 2 was launched in 2013, and the fourth-highest division since then.

The K3 League had an exhibition season held in two stages with ten teams in 2007.

The winners of both stages and the best two clubs in the overall standings qualified for the championship playoffs and the 2008 Korean FA Cup.

Seoul United became inaugural champions after winning the championship playoffs.

Seoul Pabal, which engaged in match-fixing scandal during the 2008 season, was also dissolved at that time.