Introduction: Exclusive breastfeeding, one of the goals of the National Nutrition and Health Program (PNNS), is recommended for up to 6 months if possible, and for at least 4 months. Using data from the Epifane study, conducted in 2012, our objective is to describe BF practices and duration in a national sample of newborns followed for one year. Methods: Following the random selection of 136 maternity wards in metropolitan France, questionnaires were administered to mothers in the maternity ward and at 1, 4, 8, and 12 months to collect information specifically on their BF practices. Kaplan-Meier curves were used to describe BF rates during the children’s first year of life. Results: Among the 3,368 mothers included at the maternity ward (participation rate of 81%), 83% were followed up until their child’s first birthday. At the maternity ward, breastfeeding was initiated for 74% of infants. At one month, 54% of infants were breastfed (partially, predominantly, or exclusively), 34% at 4 months, and 24% at 6 months. At 1 year of age, only 9% of children were still breastfed. Among children who had been breastfed for even a single day, the median duration of breastfeeding was 15 weeks. Discussion: In light of the recommendations, breastfeeding remains insufficient in France. These results will help better guide information campaigns and interventions undertaken, particularly within the framework of the National Nutrition and Health Program (PNNS), to promote breastfeeding. Additional analyses will be presented on the factors associated with the duration of breastfeeding. (R.A.)