BBC Sport - Rio 2016 countdown: Ann Packer wins 800m gold at Tokyo Games

Rio countdown: Packer wins 1964 gold

BBC Sport continues the countdown to the 2016 Rio Olympics with the moment Great Britain's Ann Packer won 800m gold at Tokyo 1964, having never previously run an international race at that distance.

Watch full coverage of the 2016 Olympic Games across the BBC this summer.