The 2012 Summer Games marks the end of Clara Hughes's Olympic career, during which she won six medals to tie Cindy Klassen as the most-decorated Olympian in Canadian history. Here's a look back at the highlights of her career. (MARCEL CRETAIN/QMI Agency)
Clara Hughes burst onto the national sports scene with two bronze medals in cycling events -- time trial and road race -- at the 1996 Summer Games in Atlanta.
Following her success at the Atlanta Games, Hughes (seen here with fellow Olympian Beckie Scott) donated $10,000 of her personal savings to Right To Play, whose programs use sports to help young people in disadvantaged areas.
To complement her Summer Games medals, Hughes, seen here getting a post-race massage, won bronze in the 5,000M women's speed skating event at the 2002 Winter Games in Salt Lake City.
At the 2006 Winter Games in Turin, Italy, Clara Hughes won two more medals -- silver in team pursuit speed skating and gold in 5,000M speed skating.. REUTERS/Max Rossi
In 2010 she became the national face of Let's Talk, a Bell-sponsored campaign to battle the stigma around mental illness. She has openly shared her past struggles with depression.
Clara Hughes got some celebrity treatment in 2010 as she received her own star on Canada's Walk of Fame in Toronto.
Clara Hughes, front row, second from left, was inducted into the Canadian Sports Hall of Fame on Nov. 10, 2010.
The Order of Canada, considered the country's highest honour, was given to Clara Hughes by then-Governor General Michaelle Jean in Ottawa on April 7, 2010.
After serving as Canada's flag bearer at the Vancouver Games Opening Ceremony, Clara Hughes claimed another bronze in 5,000M speed skating -- making it six medals in four different Games.
Clara Hughes won bronze in the women's speed skating 5000m race at the 2010 Winter Games in Vancouver.
At age 39, Clara Hughes competed in the 2012 Summer Games in two cycling events, road race and time trials. She finished 32nd and 5th, respectively, leaving London without a medal. "Sorry if anyone feels disappointed," she said after her last Olympic race (pictured).