Internationalisation of firms has been described in many theoretical concepts, among which the Uppsala model is the most widely used. It focuses on the sequence of the process in terms of both forms and directions of internationalisation. The need to gradually advance in internationalisation and the choice of foreign markets are explained by the concept of “psychic distance”, which results, among the others, from cultural differences or business practices of the home and host country. Our paper makes an attempt to answer the question whether Polish firms which enter the path of internationalisation start to invest in one or a few neighbouring countries rather than investing in distant markets and/or several markets simultaneously. The idea is analyzed using the example of firms based in Poland and in the Lodz Region involved in foreign direct investment. The paper has been divided into 3 parts. The first one reviews the literature on internationalization models, with particular stress on the Uppsala model; the second part validates the main assumptions of the model using data concerning firms from Poland and the third part focuses on foreign operations of companies from the Lodz Region.