Mexico City 1968
The 1968 Summer Olympics held in Mexico City are officially known as the Games of the XIX Olympiad. The first games to be held at altitude with an Olympic city 2,300 metres above sea level. The air contains 30% less oxygen than at sea level and gave those born at altitude and advantage and saw new world records in all sprint events as well as the long jump and triple jump.
American long-jumper Bob Beamon, who achieved a spectacular long jump of 8.90m - a world record that would last for 23 years.