Sonia O'Sullivan / by Molly Schiot

O'Sullivan holds the distinction of being Ireland's most successful female athlete of all time, having won double gold at the 1998 cross country championships and a silver medal in the 2000 Olympics in the 5000m. At the 2012 Olympics, O'Sullivan served as the Chef de Mission for Ireland, preparing young Irish athletes for the unique stressors of competing on an Olympic stage. 

O'Sullivan holds the distinction of being Ireland's most successful female athlete of all time, having won double gold at the 1998 cross country championships and a silver medal in the 2000 Olympics in the 5000m. At the 2012 Olympics, O'Sullivan served as the Chef de Mission for Ireland, preparing young Irish athletes for the unique stressors of competing on an Olympic stage.