Olga Kotelko, track and field athlete
She's won more than 700 gold medals, set more than 26 world records and she's 94 years old. Olga Kotelko took up track and field when she was 77 years old. She competes in 11 events in the Masters Games, including the high jump, hammer throw and the 200 metre run. She astonishes doctors with her energy, good health and athletic ability.