The article has two goals. The first one was to discuss the problem of the boundaries of geographical sectors/ markets in the conditions of globalisation and regionalisation, with particular emphasis on agri-food economy. The discussion was based on a review of a variety of sources – the analysis covered the literature in the field of economics and economic geography, strategic management, marketing and logistics. The article addressed the issues of market and sector concepts and the importance of their geographic dimension. In this context, the role of distance and area for farming was presented. The processes of globalisation and the development of regional integration groupings were discussed, indicating their importance for the agri-food sector. The second objective was to present the concept of determining the geographical boundaries of sectors/markets. The existing methods of assessing the globalisation potential of the sector were discussed. Afterwards, while compiling the elements of these approaches and extending the range of included degrees of possible spatial ranges, an own approach was put forward. There is a need to further research this area, in particular to attempt to determine the geographical range of sectors, including agri-food products. The concept proposed in the article can be used in this regard. To that end, it would be desirable to further operationalise it and test it in practical terms in the evaluation of the geographical ranges of markets.