Zagreb County borders the City of Zagreb, so it is often called "Zagreb Ring". This county is one of the most developed counties and it includes 694 settlements, 25 municipalities and 9 cities. In terms of income and employment, it is at the very top of Croatian economy and since tourism has a significant share in the economy, it is very important to use all the tourist potential. Modern trends in the tourism market have increased interest in active tourism in both coastal and continental tourism. Recently, the interest in active tourism has been increased by the pandemic caused by the SARS-CoV-2 virus because tourists want to spend as much time outdoors as possible. Based on published data and interviews with employees of tourist boards of county towns, the tourist offer of the county was analysed in this thesis with special emphasis on active tourism. Due to its position, the county is rich in excursion tourism, which is not valued through tourist results but significantly affects the county's economy. An interesting offer of active tourism is especially important in excursion tourism. This thesis analyses and makes available the tourist results, main resources and attractions of the county, respectively each of the cities in the county. Although the county is an administrative unit, each of the nine cities has its own specifics or resources, which affect its tourism products, so it must be analysed separately. In order to better understand the existing offer of active tourism in the county, the characteristics of active tourism in Slovenia, Austria and Hungary, as representatives of countries that have exclusively continental tourism, were analysed. The analysis provided insights into the characteristics of active tourism in each of the cities of Zagreb County as well as the county itself. Based on the analysis, the potentials for further development of active tourism in the context of contemporary trends in Zagreb County are considered and presented. The proposed potentials for each of the county towns can contribute to the further development of active tourism in the county.