Gillian O'Sullivan

Gillian O'Sullivan (born 21 August 1976 in Killarney) is an Irish race walker. She has held the world record in the 5000m walk since 2002 and won a silver medal at the world championship in 2003 over 20km. It was the first time since 1995 that an Irish athlete had won a World Championship medal. Six years later in Berlin at the World Championships Olive Loughnane won silver at the same event as O'Sullivan.