In addition to Trio, IL, 69 other teams played in Girls 15/16 - born 2002 - 7 aside. They were divided into 17 different groups, whereof Trio, IL could be found in Group 5 together with Gjerdrum IL, Oppdal IL, Elnesvågen og Omegn IL and Holmestrand IF.

Trio, IL continued to Playoff B after reaching 5:th place in Group 5. In the playoff they made it to 1/32 Final, but lost it against Larsnes IL with 3-4. In the Final, Årvoll IL won over Kolbotn IL and became the winner of Playoff B in Girls 15/16 - born 2002 - 7 aside.