The considerations presented below are part of current studies focused on touristic regionalisation methods. They attempt at developing a method for identification of tourist units (potential and functional areas) in the Roztocze region based on uniform criteria. The aim of the study was to initiate a discussion on methodological problems related to delimitation of touristic regions. This was achieved by a description and analysis of criteria applied currently in the touristic division of Roztocze and by a detailed assessment of potential and functions. Consequently, areas differing in their tourism potential and the degree of development of the tourism function have been distinguished. The obtained results indicate a necessity to continue the investigations of this issue, since delimitation of tourist regions remains a yet unresolved current problem. Therefore, it requires further studies, based in particular on modern techniques and research tools used in combination with various conceptual approaches.