Over the past decade, the field of sport exercise in China gets increasingly popular, resulting in a nationwide exercise fashion (Schulenkorf, Sherry, & Rowe, 2016; Yu, Li, Liu, & Su, 2015). With this new emerging shift, this study tested the proposed structural model, and specifically tested the mediating effects of dimensions of sport team attachment between runners’ team satisfaction and their runner team building behaviors (Morhart, Herzog, & Tomczak, 2009). With a sample size of 301, three dimensions of team attachment, team identity, social bonding, and team expectation were found to be significant influencing runners’ in-role team building behavior and participation in the development of this runner team. Other important findings and implications were further discussed.