The purpose of this thesis was to study why public libraries and athletic clubs want to collaborate and how the collaboration can promote reading to children and young people. The Swedish Arts Council granted three million Swedish crowns to public libraries and athletic clubs that collaborated during 2013 and 2014. The outcome was several reading promotional projects directed towards children and young people active in athletic clubs. A qualitative content analysis has been made on the project applications. The findings were that through collaborating with athletic clubs the libraries seek to address a target group hard to reach, develop new collaboration forms and partners. Children and teenagers will learn the importance of reading by educating coaches, trainers and parents to be reading role models. The projects seek to make reading easy and fun. This was accomplished by meeting the participants in an environment they feel comfortable in and turning reading into a part in their everyday life. Some of the methods being used in the projects are reading competitions, book discussions, encouraging storytelling and writing together with easily accessible literature in several formats, for example audiobooks. The collaboration form differs from project to project; some projects have a clear division between the two parts. Others seek to have a close collaboration using each other’s qualification to create a long-lasting collaboration that profits everyone involved.