Leisure activity participation is important for health and well-being. This study examined similarities and differences between typically developing children and those with autism spectrum disorders (ASD) from 6 to 17 years old in "physical," "recreational," "social," "skill," and "jobs/chores activities" from a large national database. Findings revealed that children with ASD had significantly lower participation levels than those without ASD between 11 and 17 years old. They suggest an increasing disparity among many types of leisure participation for children and youth with ASD as they age, eventually leading to limited participation in adult activities. They reinforce the importance of intervention at an early age to increase participation in these activities to promote development of skills that contribute to adult competencies.