This research investigates the correlations and influence between motivations, flow experience and revisiting willingness. First, the motivations how to influence the flow experience and revisiting willingness. Furthermore, the paper makes sure the causal relationship on variables of each dimension, for each variable it explore the operational definition and design an appropriate questionnaire to measure variables. This study utilizes questionnaires to make the research on the road running participants. The questionnaires issue 550 copies; after deducting 45 invalid questionnaires, 505 responses are valid and returned rate is 91.81%. Structural equation modeling (SEM) was applied to examine the model of this study. The analytical results indicated that: (1) motivations had a significantly positive influence on flow Experience; (2) flow experience had a significantly positive influence on revisiting willingness; (3) motivations had a significantly positive influence on revisiting willingness. In conclusion, that motivations could have the degree of involvement by the flow experience to participate in sports and the road running participants revisiting willingness had significantly enhance the effect.