The ‘Multipliers in European Youth Participation’ project aimed at strengthening the skills and competences of youth workers of partner organisations in 33 countries by providing the participants both basic and deepened knowledge on the corner stones and the development of the organisational work of international youth organisations. By bringing together a diverse and international group of nearly 100 participants, the project created synergies between the partners and participants, helped them to develop their existing skills, improved the quality of their own activities, and foster the creation of a network of peers and similar-minded youth organisations, to work together also further on. All participants were young youth workers or volunteers themselves, and fifty of them were a part of the Erasmus+ programme. The training event was organised on 28-31 August 2015 in Berlin-Wannsee, Germany. The project was coordinated by the Schwarzkopf Foundation and joined by other youth organisations from all over Europe, who committed to the project and sent participants to the training. The project was initiated after an initial round of feedback from the partners, and it was built on past analyses and assessments of training needs within the network of European Youth Parliament youth organisations. The training course was composed of several modules that were based on non-formal learning methods and encouraged active participation. The interaction of participants was encouraged and passive listening formats avoided throughout the training event. All key activities were run and planned by young volunteers, making the project an entirely youth-run project. The participants were not only involved in the activity, they were also the main actors and were involved in all stages of the project. The activities of this project engaged the young participants in continuous informal and non-formal learning processes. All the training materials and outcomes were documented carefully and made available to the participants, members of the youth network and the members of the partner organisations. The project encouraged participants to act as multipliers by organising follow-up trainings and workshops to pass on what they learned at the training. As the participants developed an international network of peers and youth workers through this project, the sustainable impact of this project was enhanced.