800 metres at the Olympics 800 meters is one of four individual events documented exclusively by Olympic documentary filmmaker Bud Greenspan. The Olympic records are held by David Rudisha, who ran a world record of 1:40.91 minutes in 2012, and Nadezhda Olizarenko, who ran a former world record of 1:53.43 minutes in 1980. Olizarenko's mark is the joint longest-standing women's Olympic record (technically set three days after Ilona Slupianek's shot put record) and the joint second-longest after the men's long jump record by Bob Beamon. Her time remains the second fastest ever for the event. The 800 metres world record has been broken or tied
Race walking at the Olympics the first two editions, the women's event was extended to match the men's 20 km distance from the 2000 Sydney Olympics onwards. Women have never commonly competed internationally over 50 km, thus it has never been proposed as an Olympic event – as of 2012 it remains the only event on the Olympic athletics programme in which men compete, but women do not have an equivalent. The 50 km is also the longest distance race for an Olympic athletics event. The Olympic records in racewalking were all broken at the 2012 London Olympics. In the 20 km walk Chen Ding