Purpose Identify and prioritise strategies to optimise physical activity participation in the community gym setting for young adults with cerebral palsy. Methods An e-Delphi method was implemented over three rounds with four stakeholder groups (young adults with cerebral palsy, their families, gym staff or exercise professionals, and health professionals). Strategies for change were identified by the stakeholders in round 1. In rounds 2 and 3, strategies for change were rated on the importance for implementation using a 7-point Likert scale (1 being lowest importance, 7 being highest). The consensus was achieved if ≥70% of participants identified a strategy as high importance. Results Seventy participants (20 young adults 10 family members, 21 health professionals, and 19 exercise professionals) identified 83 strategies for improving gym participation. Of these, 44 strategies met the consensus criteria. The highest priority strategies related to changing the physical environment, addressing cost barriers, gym staff training, and developing partnerships between sectors. Conclusions Addressing physical accessibility, cost of attendance and the skills of gym staff were agreed upon by the stakeholder groups as priority areas for future resource allocation and research translation. Clinicians and community leisure facilities must work with consumers to implement strategies in their local contexts.