The purpose of this study is to investigate the idiographic roles of mentors who supervise student teachers in distance-learning pre-service teacher education programs during practicum. The findings of the study revealed that the cooperating teachers identified the following tasks as their mentoring responsibilities: ‘Providing facilitative information to enhance classroom performance’, ‘Giving constructive feedback on teaching performance’, ‘Helping student teachers form a professional identity and become aware of their professional development’, ‘Providing moral support’, ‘Facilitating socialization of the student teacher’, ‘Scaffolding lesson planning’, ‘Willingly offering facilitative information’, ‘Helping students to use and understand observation forms’, ‘Preparing for the mentor role’ and ‘Interacting with other cooperating teachers’.