Its schedule was announced on 30 January 2013, and it began on 16 March.

Sangju Sangmu won 4–2 on aggregate and were promoted to the K League Classic, while Gangwon FC were relegated to the K League Challenge.

Attendants who entered with free ticket were not counted.

Korean Police played all matches at opponents' stadiums.

Source: K LeagueNotes:† Team played previous season in K League.