In addition to Kolbotn IL, 69 other teams played in Girls 15/16 - born 2002 - 7 aside. They were divided into 17 different groups, whereof Kolbotn IL could be found in Group 7 together with Syril IL, Stegaberg IL and Ekholt BK.

Kolbotn IL made it to Playoff B after reaching 3:rd place in Group 7. Once in the playoff they made it all the way to the Final, but lost it against Årvoll IL with 1-2. Thereby Kolbotn IL finished second in U Playoff B during Norway Cup 2018.

Kolbotn IL also participated in R - Girls 11-aside, 15/16 years during Norway Cup 2017. They reached the 1/4 Final in R Playoff A, but lost it against Strindheim IL 1 with 0-1.