The K3 party is Triton Lillestrøm swimming and triathlon club's third best party in the "competition series". Swimmers on K3 have found the joy of swimming and have a desire to make an effort to improve their level. The swimmers are planning, so they can participate in planned activities and they follow their training plan, so that the progression is seen over time. Swimmers at K3 try out morning training and learn to take responsibility for their own training, at the same time as the swimmer prepares to focus on swimming. The K3 party offers participation in e.g. training camps / weekends and various lectures.