She won 4 olympic medal (one gold, two silver, one bronze) in three different olympics (Barcelona, Atlanta, Sydney).
She won 13 world champion titles (and 13 other medals) in fifth discipline. (road race, time trial, track point race, track 3 km pursuit and even moutain bike !)
She also perform 38 world record and won almost every races but the Italy Tour during her incredible career.
Today, she won her 54th (!)french championship , her 15th french Road cycling championship, 29 years after her first one. After wining the french Time Trial championship thursday (the sixth time she's winning both Road cycling and time trial french championship the same year) she is very likely to take part to his seventh olympics in Beijing ! 
Her name: Jeannie Longo, she will turn 50 this autumn and despite competing against opponents who could all be her daughters she still isn't considering to stop her career .
Does someone has exemples of other incredibly long sport career like that ?