4 × 400 metres relay 4 × 400 metres relay The 4 × 400 metres relay or long relay is an athletics track event in which teams consist of four runners who each complete 400 metres or one lap. It is traditionally the final event of a track meet. At top class events, the first 500 metres is run in lanes. Start lines are thus staggered over a greater distance than in an individual 400 metres race; the runners then typically move to the inside of the track. Relay race runners typically carry a relay baton which they must transfer between teammates. Runners have a
Athletics at the 2012 Summer Olympics – Women's 400 metres Athletics at the 2012 Summer Olympics – Women's 400 metres The Women's 400 metres competition at the 2012 Summer Olympics in London, United Kingdom. The event was held at the Olympic Stadium on 3–5 August. London rains became a part of the qualifying round, where the favorites tried to make the final with minimum effort. 52.11 was the slowest time qualifier, though Tjipekapora Herunga managed a 52.31 for the slowest automatic qualifier. In the semi-final, the weather was better. In the first semi, Sanya Richards-Ross was matched with the defending champion Christine Ohuruogu, with only two automatic qualifiers. At the