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
150 metres 150 metres 150 metres is a sprint event in track and field. It is a very rarely contested non-championship and not an IAAF-recognised event. Given the proportion of standard running tracks, the event typically incorporates a bend when held in a track and field stadium, although some especially-built tracks allow the event to take place entirely on a straight. The event was given a high-profile outing in 1997 as an intermediate contest between two 1996 Olympic champions: Donovan Bailey (100 metres) and Michael Johnson (200 metres). Johnson pulled up mid-race, allowing Bailey to win the $1 million prize. This race