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
3000 metres outdoor championships, but is occasionally hosted at annual elite track and field meetings. It is often featured in indoor track and field programmes and is the longest distance event present at the IAAF World Indoor Championships. In women's athletics, 3000 metres was a standard event in the Olympic Games (1984 to 1992) and World Championships (1980 to 1993). The event was discontinued at World Championship and Olympic level after the 1993 World Championships in Athletics – Qu Yunxia being the final gold medal winner at the event. Starting with the 1995 World Championships in Athletics and the 1996 Olympic Games,