Description Available in: Union Sportive de Boulogne-sur-Mer Côte d'Opale (commonly referred to as US Boulogne or frequently, simply Boulogne) is a French association football club based in the commune of Boulogne-sur-Mer. The club was founded in 1898 and currently plays in Championnat National, the third division of French football, having been relegated from Ligue 2 during the 2011–12 season.
The club was formed in 1898 and its achievements are comparatively minor, with their biggest feat to date consisting of reaching the semi-finals during the 1936–37 edition of the Coupe de France. Boulogne play their home matches at the Stade de la Libération, which seats 15,004 having previously seated only 7,000 prior to its renovation in 2007.