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
Sprint (track cycling) for the second lap; at the end of the second lap, the second rider does the same, leaving the third rider to complete the last lap on his own. In the women's event, teams of two compete over a two-lap distance. The team sprint has been an Olympic event for men since 2000 and for women since 2012. The chariot is a short, usually one lap, race. Depending on track size, between four and eight cyclists start from a standing start, and do an all out sprint for one lap. The first rider across the finish line is the winner.