U.S.O. Calcio U.S.O. Calcio Unione Sportiva Oratorio Calcio was an Italian association football club representing the Lombardian towns of Calcio, Lombardy. The club was founded in 1978 as Unione Sportiva Oratorio Calcio, (also known as U.S.O. Calcio) in the town of Calcio. In 2007 the club was merged with U.S. Caravaggese, a team of the town of Caravaggio founding U.S. Calcio Caravaggese. From 2007 to 2009 the club has played its home matches at Nuovo Stadio Comunale in the town Caravaggio, which has a capacity of 2,000. Soon later the club, second-placed in the 2006–07 Serie D group B as "U.S.O. Calcio",
A.S.D. Calcio Ivrea plays always in Promozione Piedmont and Aosta Valley group B ranking 2nd in the league and 3rd in the subsequent play offs. In the season 2011–12 it was promoted to Eccellenza after winning the group B of Promozione Piedmont and Aosta Valley group B, also conquering the regional Scudetto of Promozione. In the summer 2012 the club that plays in Eccellenza Piedmont and Aosta Valley group A was renamed A.S.D. Calcio Ivrea, thus becoming the new "Ivrea". The team's color is orange. A.S.D. Calcio Ivrea Associazione Sportiva Dilettantistica Calcio Ivrea commonly referred to as A.S.D. Calcio Ivrea or simply Ivrea