In addition to Stenungsunds IF, 190 other teams from 33 different countries played in Boys 16. They were divided into 47 different groups, whereof Stenungsunds IF could be found in Group 16 together with IK Grand Bodø, International SA and IFK Umeå. Stenungsunds IF continued to Play off B after reaching 3:rd place in Group 16. In the playoff they made it to 1/64 Final, but lost it against KL Youth Soccer with 1-2. In the Final, IFK Lidingö FK won over GAIS and became the winner of Play off B in Boys 16. Stenungsunds IF also participated in Boys 15 during Gothia Cup 2013. They reached the 1/16 Final in B15 Play off A, but lost it against Vasalunds IF with 0-2.