Adventure tourism is a type of tourism that occupies an increasing share of tourist activities in Croatia every year. The analysis of adventure segments includes all aspects important for the implementation of this type of tourism in the Split -Dalmatia County with the ultimate goal of eliminating all uncertainties when opening a specialized tourist agency. The main goals of the paper are faithful imitation of the process of opening a specialized tourist agency for adventure in the Split - Dalmatia County, analysis of the profitability of entering such an entrepreneurial project, development perspectives of this type of tourism in the near and distant future. The analysis of the paper includes: the procedure of opening a tourist agency, the analysis of the market basis of the model, the analysis of the situation and the analysis of competition. Special emphasis is placed on the marketing mix, which includes two excursions and two multi-day arrangements. The end of the paper represents technical and technological analysis and economic - financial analysis in order to get the ultimate answer about the profitability of starting such an entrepreneurial venture. SplitDalmatia County is an inexhaustible source of natural and cultural wealth of the country and one of the key generators of tourism development in the Republic of Croatia, however, there is a weak development of alternative forms of tourism and a large space for progress