The 100 metres, or 100-meter dash, is a sprint race in track and field competitions. The shortest common outdoor running distance, the 100-meter (109.36 yd) dash is one of the most popular and prestigious events in the sport of athletics. It has been contested at the Summer Olympics since 1896 for men and since 1928 for women. The inaugural World Championships were in 1983.
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. Each runner carries a relay baton. Before 2018, the baton had to be passed within a 20 m changeover box, preceded by a 10-metre acceleration zone. With a rule change effective November 1, 2017, that zone was modified to include the acceleration zone as part of the passing zone, making the entire zone 30 metres in length. The outgoing runner cannot touch the baton until it has entered the zone, and the incoming runner cannot touch it after it has left the zone. The zone is usually marked in yellow, frequently using lines, triangles or chevrons. While the rule book specifies the exact positioning of the marks, the colours and style are only "recommended". While most legacy tracks will still have the older markings, the rule change still uses existing marks. Not all governing body jurisdictions have adopted the rule change.
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 leg and the first bend of the second leg are 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. The slightly longer 4 × 440 yards relay, on an Imperial distance, was a formerly run British Commonwealth and American event, until metrication was completed in the 1970s.
The men's 4 x 100 metres relay events at the 2011 IPC Athletics World Championships were held at the QEII Stadium on 24, 27 and 29 January
Brenden Hall, is an Australian Paralympic amputee swimmer who won two gold medals at the 2012 Summer Paralympics in London. He represented Australia at the 2016 Rio Paralympics where he won one gold, one silver and one bronze medal. He competed at 2020 Summer Paralympics, his fourth games.
The World Athletics Relays, known as the IAAF World Relays until 2019, is an international biennial track and field sporting event held by World Athletics where teams from around the world compete in relay races, some of which are not part of the standard Olympic programme. The first three editions were set to take place in Nassau, Bahamas at the Thomas Robinson Stadium in 2014, 2015 and 2017. Originally intended as an annual event, it was later decided to happen every odd year, the same as the World Athletics Championships for which it serves as a qualification stage.
The men's 4 × 100 metres relay at the 2014 IPC Athletics European Championships was held at the Swansea University Stadium from 18–23 August.
The men's 4x100 metres relay at the 2015 IPC Athletics World Championships was held at the Suheim Bin Hamad Stadium in Doha from 22–31 October.
The men's 4 × 100 metres relay at the 2016 IPC Athletics European Championships were held at the Stadio Olimpico Carlo Zecchini in Grosseto from 11 to 16 June.
The women's 100 metres at the 2017 World Para Athletics Championships was held at the Olympic Stadium in London from 14 to 23 July.
The men's 100 metres at the 2017 World Para Athletics Championships was held at the Olympic Stadium in London from 14 to 23 July.
The men's 5000 metres at the 2017 World Para Athletics Championships was held at the Olympic Stadium in London from 14 to 23 July.
The men's 4 x 400 metres relay at the 2017 World Para Athletics Championships was held at the Olympic Stadium in London from 14 to 23 July.
The women's 4 x 400 metres relay at the 2017 World Para Athletics Championships was held at the Olympic Stadium in London from 14 to 23 July.
