Trauma-informed sport programs are an emerging means to support youth who have experienced psychological trauma. Using a train-the-trainer model, which involves building the capacities of peer facilitators to train youth workers, may be a promising approach for integrating and sustaining trauma-informed sport programs in multiple community settings. In this study, community stakeholders' experiences are explored with regards to participating in a train-the-trainer model focused on disseminating trauma-informed sport programming throughout a national community youth organization. Peer facilitators with previous experience in delivering trauma-informed sport programming (n = 6; 4 female; Mage= 47.50±10.35; Range = 32-62) attended a two-day intensive training workshop hosted by two expert consultants; here, peer facilitators learned and practiced how to train others to deliver trauma-informed sport programming. The peer facilitators then hosted training workshops for youth workers at their respective sites, which were monitored and assessed by the expert consultants. Data were collected through workshop observations and interviews with consultants and peer facilitators, and then analysed using deductive-inductive thematic analysis. The interview guides and deductive analysis were informed by the theoretical domains framework. Results spanned across seven themes: (a) Identity as champions of trauma-informed sport approaches; (b) Anxiety in taking on new leadership roles; (c) Improved confidence through leadership practice; (d) Enhanced communication and instructional skills; (e) Value of feedback in peer facilitators' development; (f) Importance of maintaining clear expectations; and (g) Positive intentions to continue and expand training. Implications are discussed regarding how community organizations can improve the dissemination of trauma-informed sport programming.