There are about ten different racing events, which are organized in Croatia on an annual basis, ranging from the fairly easy and short events to exceptionally demanding races that last several days. Athletes and recreationalists alike willing to engage in extreme activities are discovering not only the wilderness and its surroundings but their beauty as well. The diversity and wealth of landscapes and terrains provide race organizers with an inexhaustible selection of possibilities in planning adventure routes, The beauty of the preserved natural environment of Croatia offers countless challenges on land and beneath it, under its waters and by them.