Children and adolescents with disabilities benefit from physical activity. However, this population has lower fitness levels and higher rates of obesity than their peers, suggesting that they are not meeting physical activity guidelines and are experiencing barriers to participation. The purpose of this study was to quantify physical activity participation and barriers experienced by children and adolescents with disabilities in our area. Forty-five parents or caregivers of children aged 2-18 with physical and/or intellectual disabilities completed a questionnaire regarding physical activity participation in an average week and barriers to participation, prior to the SARS-CoV-2 pandemic. Data were analysed using quantitative and qualitative methodologies. Ninety-one percent (41/45) of the children and adolescents with disabilities did not participate in sufficient physical activity to meet physical activity guidelines irrespective of type and severity of the disability (p > 0.05). Physical activity participation decreased with increasing age (r = -0.478, p = 0.001). The most commonly identified barrier was 'environments and programmes not able to handle nature of disability.' In our sample, the majority of children and adolescents with disabilities did not meet physical activity guidelines, with access reported as a primary barrier. This may have negative consequences on the physical and mental health of children and adolescents with disabilities. The SARS-CoV-2 pandemic may have worsened the rates of physical activity participation noted in our study.