At the 2013 European Youth Summer Olympic Festival in Utrecht, the Netherlands, in July 2013 at the age of 16, Hinawi won a gold medal in the 400 m freestyle finals. He finished in a time of 3:57.73, a new world record for his age group and a personal best. As he accepted his medal, the Israeli team applauded him and saluted him. He also won a gold medal in the 1500 m freestyle, in a time of 15:33.72, setting another age group record. He noted that it was his "sixth Israeli youth record in total."