Background: A majority of adults with congenital heart disease (CHD) have reduced exercise capacity and do not reach the recommended level of physical activity. A physically active lifestyle is essential to maintain health and counteract acquired cardiovascular disease. This study illuminates aspects that may be relevant for performing physical activity.Purpose: To describe facilitators and barriers for physical activity in adults with CHD.Methods: Semi-structured interviews were performed individually with fourteen adults (age 19–68 years, women=7) with complex CHD. The interviews were analyzed using qualitative content analysis.Results: Aspects that may enable or inhibit physical activity were found in two domains; Facilitators and Barriers, which both consisted of four categories physical, psychological, psychosocial and environmental aspects (Table 1).