Mariestads BK was one of 417 clubs from Sweden that had teams playing during Gothia Cup 2012. They participated with one team in Boys 18. In addition to Mariestads BK, 147 other teams from 33 different countries played in Boys 18. They were divided into 36 different groups, whereof Mariestads BK could be found in Group 10 together with Verdal IL, La Academia FC and TSV Abbehausen. Mariestads BK continued to Slutspel B after reaching 4:th place in Group 10. In the playoff they made it to 1/32 Final, but lost it against KL Youth Soccer with 0-5. In the Final, Corsa FC 1 won over C.B./Oeste Solidaria and became the winner of Slutspel B in Boys 18. Mariestads comes from Mariestad which lies approximately 150 km from Göteborg, where Gothia Cup takes place. The area around Mariestad does also provide five additional clubs participating during Gothia Cup 2012 (Tidan IF, Johannesbergs LIF, Varnhems IF, IFK Mariestad and Mariestads BOIS FF).