Objective To understand the implementation of a diabetes peer mentorship program from the perspective of peer mentors using an implementation framework and equity lens. Methods This study was developed in collaboration with individuals with lived type 1 diabetes experience. Virtual semi-structured interviews with mentors from the “Peer-2-Peer” (P2P) mentorship program (by I Challenge Diabetes) were guided by Proctor’s Conceptual Model for Implementation and PROGRESS+. Transcripts were double-coded and categorized using inductive thematic analysis. Results Mentors reported high satisfaction with P2P, especially with its informal structure, relationships, and bidirectional benefits. The adaptable, needs-based mentoring approach addressed challenges and gaps in care such as disease acceptance, diabetes distress, managing glucose during exercise, and transitioning to adult care. Implementation strengths highlighted by mentors were equitable access through support for transportation, financial assistance, and family inclusion. The program’s flexibility allowed mentors of different ages and professions to participate. Additionally, mentors expressed a desire for crisis training and the appointment of a designated program mentor. To promote outreach, mentors encouraged the development of partnerships with clinicians. Conclusion Mentors identified key factors for the implementation of a peer mentorship program tailored to diabetes self-managed support. The informal and flexible mentoring approach helped address care gaps, create satisfaction, and promote sustainability. This was enhanced through equitable access. Opportunities to further tailor the program were identified, with enhanced mentor training and appointing a designated program mentor as the most crucial. Collaboration with diabetes care clinics for outreach was also recommended. Practice implications The findings from this study could be used to improve the implementation of other peer mentorship programs, such as ensuring flexibility for when and how peer mentors provide support, encouraging networking, providing some financial support for participants, providing additional resources for crisis training and outreach by diabetes care clinics.