Introduction: Sports events, which are intended for a wide range of people, are from day to day more. Any media event, regardless of the genre, it is not without risks and challenges. The safety of competitors, spectators and other participants must always be in the first place. Purpose: The Purpose of the thesis is the case of the Marathon Franja which shows the organization of health care in the context of mass sporting events. Methods: We used on the descriptive method to work with a review of the foreign and domestic literature, which has been obtained via the remote access Medical faculty, University of Ljubljana. Results: Marathon Franja was first performed in 1982. Marathon is a recreational-competitive event with the longest tradition in our country. For the organisation of such a large event takes a lot of time and good knowledge of the Slovenian sector-specific legislation. An important legal act, which must be taken into account in the organisation of the Marathon Franja is the Policy of the service of the emergency medical assistance. Policy sets out the number of active rescue teams at the event, on the basis of the type of the event and risk, issued by the general emergency medical assistance. The rescue services must submit to the organiser a certificate of carrying out health care at events, and certificates of professional competence of healthcare personnel. Discussion and conclusion: The Marathon Franja is a medium challenging events of type B, which requires the presence of at least one team with reanimobil and one of the team with the emergency rescue vehicle. The route is in some parts dangerous, where the presence of so many cyclists can cause an accident and consequently also many injured. In a marathon, according to the experience from previous years, a larger number of rescue teams, which can provide appropriate medical care, are present.