Background and Purpose Social Marketing seeks to develop constructive practices through sports to support the modification and improvement of behaviors and lifestyles, while also enriching society's leisure time (Rouhani, Andam, Bahr ol Olum, & Memari, 2020). Currently, the very low participation of Iranians in "Sports for All" and recreational sports, which is a social issue with behavioral roots, is not exempt from this principle (Tatari, Ehsani, Koozechian, Nowrouzi Seyed Hosseini, 2019, 39). If the development of sports for all is ignored in a society and there is no structured program in place, that society will face numerous problems, including various physical abnormalities and other issues, both direct and indirect, resulting from a lack of participation in physical activities. Such neglect is considered a form of misbehavior in civilized societies (Carmen, 2016). Therefore, low participation in the sport activities and the lack of comprehensive development of "Sports for All" are considered major social issues (Li, Lai, & Lin, 2016). They identified social media and related activities, such as advertising, as effective factors in launching social marketing campaigns. They highlighted the numerous benefits of this approach, including the creation of new opportunities that encourage the adoption of beneficial behaviors aligned with societal goals. In Iran, particularly in the realm of cyberspace policymaking and new media, insufficient attention has been paid to the communication needs of Iranians in joining social networks. In fact, the negative perspective toward technological developments in new media and the neglect of the audience's communication needs not only prevent us from gaining a scientific understanding of these needs, but also create an environment that allows these networks to exert influence—often in ways that do not align with our national and social interests (Sobhani & Hashemi,2017, 170). Given that many factors influence participation in sports activities, the researchers of this study have decided to approach this important issue from a new perspective. They aim to explore the concepts and solutions offered by social networks and their impact on the development of social marketing. Through this approach, they seek to identify ways to change behaviors and promote desirable and innovative behaviors by raising awareness about social marketing. Considering the lack of research in the field of sports management, the author intends to investigate the relationship between the components of virtual networks and social marketing in the development of "Sports for All. " Materials and Methods This research is applied in terms of purpose and is a descriptive-survey in nature with regard to data collection. Specifically, it employs a correlational design and structural equation modeling. The statistical population of this study consisted of members of sports clubs affiliated with the Department of Sports and Youth in Tehran, who had at least six months of membership and were active on social networks...