The Norwegian Women's Football League, known as Toppserien, is the top tier of women's football in Norway. Established in 1987, it features several clubs competing for the championship title each season. The league operates on a promotion and relegation system with the lower division, 1. divisjon. Toppserien typically runs from March to November, with teams playing each other twice, once at home and once away. The league has produced many talented players and has contributed to the growth of women's football in Norway, enhancing the country's reputation in international competitions.