is paper is based on a theoretical review of the literature related to sports tourism in Zadarska County. The aim of the paper was to show how sport can be the carrier of the tourist offer of Zadarska County. It was shown that trekking, as one of the forms of sports tourism, can raise the quality of the tourist offer of Zadarska County and greatly affect the extension of the tourist season, which was also a research hypothesis. The paper uses a qualitative methodology that includes work and analysis of existing literature on this topic, and the following research methods were used: inductive and deductive methods, methods of synthesis, analysis, classification and description. The first part of the paper discusses tourism in general, types and forms of tourism. The second part refers to sport, the definition of sport, its economic effects and resources, and the types of sports tourism. The third part refers to the analysis of the resource and attraction base of the city of Zadar and Zadarska County, the natural geographical features of the area and sports facilities. The fourth and last part refers to sports tourism in the city of Zadar, and sports content for tourist purposes, is trekking, has been proposed and developed. Thanks to the rich historical, cultural and natural resources, the entire Zadarska County has great potential for the tourist development of any form of tourism, including sports. There are three sports and recreation centers in Zadar: Višnjik, Ravnice and Mocire. In them, the local population, but also tourists have the opportunity to engage in various forms of sports. Numerous marked bike and hiking trails, as well as numerous Polish unmarked trails are used for walking, hiking and cycling. There are also basketball, football and tennis courts in Zadar, but lately the emphasis has been placed on adventure sports that are focused on fun, relaxation and recreation. Among them is hiking, is trekking, which is still insufficiently promoted and there is no significant realization of this form of tourism. Trekking involves several days of walking longer distances. The paper presents the proposal of the project „Trekking Zadar“, and the aim of the project is to offer and use tourist and hiking trails and roads to combine sports and physical activities with cultural and historical tourism of Zadar, but also to introduce tourists to a wide gastronomic offer. experiencing local traditions and extending the tourist season. The emphasis is on the education of tourist guides, good signalization of hiking trails and paths, their sustainability and the presentation of traditional and historical stories of tourist places. Also, thanks to this project, it is possible to establish a Trekking League that would attract many competitors throughout the year. The trekking event "Zrmanja trekking", which lasts for three days, is organized by the Tourist Board of the city of Zadar and Obrovac. The first two days are trekking, and the third day is rafting. The race includes two categories: for advanced athletes and beginners. Although participation includes a registration fee, valuable prizes will be provided for the race winners. The event will take place in April, and such a holding time will greatly help extend the tourist season.