4 × 100 metres relay a cinder track at the 1964 Tokyo Games. The women's world record stands at 40.82 seconds, set by the United States in 2012 at the London Olympics. According to the IAAF rules, world records in relays can only be set if all team members have the same nationality. 4 × 100 metres relay The 4 × 100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each. The first runners must begin in the same stagger as for the individual 400 m race. A
10,000 metres at the Olympics 10,000 metres at the Olympics The 10,000 metres at the Summer Olympics is the longest track running event held at the multi-sport event. The men's 10,000 m has been present on the Olympic athletics programme since 1912. The women's event was added to the programme over seventy years later, at the 1988 Olympics. It is the most prestigious 10,000 m race at elite level. The competition format is a straight final between around 30 athletes, although prior to 2004 a qualifying round was held. The Olympic records for the event were both set by Ethiopians at the 2008 Beijing Olympics