France, Jan. 24 -- On International women sport's day, we highlight the journey ofMarie-Christine Subot, a French pioneer incross-country skiing. Her daughter Celia Poncelin looks back on her mother's sporting career in her recently published bookUne si grande championne (A great champion).

Twenty-nine year old Celia Poncelin was born in the French Alps into a sporty family. Her mother, Marie-Christine Subot, was a cross-country skiing champion in the 1970s and 80s.

Subot won her first French championship title in 1975, aged 20, when she was studying mathematics.

Celia Poncelin had grown up knowing her mother's passion for sport but discovered the details "by chance" three years ago when she landed on her mother's family archives.