In modern conditions, the importance of project competencies is increasing, the process of creating a network project requires time resources, knowledge of the features of project technology. In addition, in the conditions of a teacher's employment with professional activities, it turns out to be quite difficult. However, the experience of creating network projects testifies to the success of such work under the guidance of specially trained mentors (tutors) in a team of like-minded people. Networked project-oriented activities will help the early profiling of training and career guidance for schoolchildren, a meaningful choice of their future profession, and students will be able to immerse themselves deeply in an already chosen profession. There is accumulated experience in the implementation of this type of activity on special Internet platforms that ensure the organization and management of network design and research activities. Examples of such platforms are the Russian products Reactor and GlobalLab. The article describes the experience of organizing networked project-oriented activities at the international distance marathon “Kupala projects 2020” under the auspices of Yanka Kupala State University of Grodno.