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
2017 World Championships in Athletics – Women's 3000 metres steeplechase 2017 World Championships in Athletics – Women's 3000 metres steeplechase The women's 3000 metres steeplechase at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 9 and 11 August. Kenya had six entrants in the race, the three normally allowed including the number one runner in 2017 Celliphine Chepteek Chespol, plus defending champion Hyvin Jepkemoi and two expatriates; Winfred Mutile Yavi and world record holder / Olympic champion Ruth Jebet who were running for Bahrain. From the gun in the final Beatrice Chepkoech went to the front. There is a partial lap at the beginning