In addition to HSC Haltern-Sythen, 77 other teams from 10 different countries do play in Girls 18. They are divided into 12 different groups, whereof HSC Haltern-Sythen can be found in Group 5 together with Njård IL, RK Krim Mercator, IF Stjernen, Odense, Kvibergs HK and Örebro SK Handboll. HSC Haltern-Sythen also participated in Girls 18 during Partille Cup 2023. They reached the 1/16 Final in G18 B-Play-off, but lost it against Skødstrup Håndbold with 12-17.