Events have tremendous impacts on the environment as a vast amount of waste is produced, in a relatively short period of time. In this thesis it is tried to list and specify challenges and positive experiences so far concerning waste management. Based on literature and interviews with several experts, possible potential for improving the current waste management is shown. To emphasize the importance of regional waste management, two regional case studies were selected the FIS Alpine World Ski Championship 2013 and the annually held Graz Marathon. These two case studies are examined in detail and thus challenges and positive experiences are verified. Moreover, essential potential for improvements are discussed and listed. On the initiative of “Gscheit Feiern” some positive aspects could already be implemented successfully. Regarding catering, only regional products are used and only reusable cup systems are allowed. Another positive achievement can be found in the city of Graz. Thus, host organizers have to create an obligatory waste management concept, and caterers have to use reusable cup systems within the city. However, conducted interviews have shown clearly that environmentally sustainable events, depend on the willingness of the host organizer and future political support. Furthermore, interviews confirmed that environmentally and resource friendly events have positive effects on visitors as they change their attitude and behave exemplary when it comes to separation of waste.