The study examined the subjective experiences of autistic youth regarding the role of peer interactions and relationships in feelings of belonging in integrated physical education classes. The term integrated is used to describe a setting in which all students, regardless of educational needs, are educated in the same physical space. Eight autistic youth (all male, aged 13-18 years) who had received most of their physical education in integrated classes acted as participants. Semi-structured interviews were used to generate qualitative data, which were analyzed using a reflexive thematic approach. Findings are presented in three themes: (a) bullying can lead to self-harm and self-isolation, (b) peer interactions and relationships in the locker room, and (c) peer relationships are based on shared interests and take time to develop. Even though autistic students were educated in the same spaces as their non-autistic peers, feelings of belonging were largely unavailable to them.