Marguerite Mahieux
Her earliest main competition was the "Coupe de Noël de Marseille" on 25 December 1925. In 1926 she won with her team the bronze medal at the national championships in the 4 x 100 metre freestyle relay. In August she finished second in the crossing of the port of Marseille. She competed for the first time in the , an open water competition in Paris. She competed from then every year at the  until 1934. The race she competed in was also the . After finishing fourth in 1927, she won the women's race in 1929, 1930, 1931 and 1932; and so she became four times French national champion. In later years she finished third in 1933 and second in 1932. She won with her team the team event the "Petit Parisien Cup" in 1929, 1930, 1932 and 1933 after they finished second in 1928.