An active adult lifestyle is related to higher quality of life regarding physical and psychological well-being. This study investigates the influence of organized sports participation during adolescence in adult physical activity in a retrospective way. A sample of participants living in the north of Spain was asked to report the minutes invested in vigorous, moderate and walking activities during the last seven days. Results showed that those who had been sports club members or had participated in competition prior to the age of 16 had spent a longer time on vigorous activities and a lesser amount of minutes on walking during the last seven days. Implications of adolescent organized sport for continuity of physical activity in adulthood are discussed.