The achieved results indicate that in the period of 2010-2016, the number of sporting events (running, cycling and walking) as well as the number of participants has increased many times. A geostatistical method, i.e., kriging, was used to check the distance-based relationship between agglomerations proximity and sporting events. The questionnaire surveys were used to determine the reasons for physical activity in the forest. The analysis of the impact of the scope of the urban agglomerations on the number of organised physical activities proved that, in both cases (Warsaw and Tricity), most events take place in forests located close to these cities. The larger the distance to Warsaw or Tricity, the lower the number of sporting events and the lower the number of participants. The reasons why people take up physical activity are mainly to improve their health and physical condition, reduce stress and improve wellbeing. The conducted research indicates a significant increase in the importance of non-productive functions of forests located in the vicinity of urban agglomerations, as well as the need for continuous monitoring of actions taken by foresters to promote active lifestyles.