Wilma Rudolph was an American sprinter, overcoming childhood polio to become the first woman to win three gold medals in a single Olympics.
Hayley Wickenheiser is a Canadian former ice hockey player, widely regarded as one of the greatest female hockey players of all time, who also served as a medical doctor during her career.
Marilyn Bell was a Canadian long-distance swimmer who made history by becoming the first person to swim across Lake Ontario in 1954.
Sandra Schmirler was a Canadian curler who dominated the sport, winning three World Championships and two Olympic gold medals.
Alison Hargreaves was a British mountaineer who made history as the first woman to solo climb Everest without supplemental oxygen.