In addition to the two Kärra teams, 108 other teams from 14 different countries played in Girls 13. They were divided into 18 different groups, whereof Kärra HF 1 could be found in Group 15 together with Pechbonnieu 1, Ull/Kisa IL 2, Fjellhammer IL 1, Skuru IK 3 and Rödovre HK. Kärra HF 1 continued to B-Play-off after reaching 4:th place in Group 15. In the playoff they made it to 1/8 Final, but lost it against IK Sävehof 4 with 12-13. In the Final, AEH Les Franqueses del Vallès won over BK Heid 1 and became the winner of B-Play-off in Girls 13. Kärra HF also participated in Girls 12 during Partille Cup 2018. They reached the 1/16 Final in G12 A-Play-off, but lost it against IK Sävehof 5 with 8-9.