The World Athletics Championships are a biennial athletics competition organized by World Athletics. Alongside the Olympic Games, they represent the highest level championships of senior international outdoor athletics competition for track and field athletics globally, including marathon running and race walking. Separate World Championships are held by World Athletics for certain other outdoor events, including cross-country running and half-marathon, as well as indoor and age-group championships.
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 IAAF Continental Cup was an international track and field competition organized by the International Association of Athletics Federations (IAAF).
The Czech Republic competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Ukraine competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
Nigeria competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea.
The 2017 IAAF World Championships, the sixteenth edition of the IAAF World Championships, were held from 4 to 13 August at London Stadium in London, United Kingdom. London was officially awarded the championships on 11 November 2011.
The 2019 IAAF World Athletics Championships was the seventeenth edition of the biennial, global athletics competition organised by the International Association of Athletics Federations (IAAF), since renamed World Athletics. It was held between 27 September and 6 October 2019 in Doha, Qatar, at the renovated multi-purpose Khalifa International Stadium, but reduced to 21,000 available seats. 1,772 athletes from 206 teams competed in 49 athletics events over the ten-day competition, comprising 24 events each for men and women, plus a mixed relay. There were 43 track and field events, 4 racewalking events, and 2 marathon road running events. The racewalking and marathon events were held in Doha Corniche.
Ukraine competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's sixth consecutive appearance at the Summer Olympics in the post-Soviet era.
The 2022 World Athletics Championships was the eighteenth edition of the World Athletics Championships. It was held at Hayward Field in Eugene, Oregon, United States, from July 15–24, 2022, with the country hosting that competition for the first time. The competition was originally scheduled for August 6–15, 2021, but it was postponed by one year due to the COVID-19 pandemic.
Kendall Ellis is an American sprinter. Ellis won gold in the 4x400 m relay and bronze in the Mixed 4x400 metres at the Tokyo Olympics. She competed in the 400 meters at the 2017 and 2019 World Championships, winning gold medals as a part of prelim 4×400 m relays. As a junior, Ellis took gold in the 4×400 m relay and bronze in the 400 meters at the 2015 Pan American Junior Championships.
Artem Andriyovych Darenskyi is a Ukrainian pair skater who currently competes with Sofiia Holichenko. With Holichenko, he is a two-time Ukrainian national senior champion. With his former skating partner, Sofiia Nesterova, he is a two-time Ukrainian national senior champion. The pair has competed in the final segment at two World Junior Championships, finishing within the top eight at the 2019 edition.
Yaroslava Oleksiyivna Mahuchikh is a Ukrainian high jumper. She was the 2020 Summer Olympics bronze medalist, 2019 and 2022 World Championships silver medalist, and 2022 World Indoor Championships gold medalist.
2019 Ukrainian Athletics Championships among the athletes of the senior age category was held from 21 to 23 August in Lutsk at Avanhard Stadium.
Italy competed at the 2019 World Athletics Championships in Doha, Qatar, from 27 September to 6 October 2019.
Wiktor Suwara is a Polish athlete. He competed in the mixed 4 × 400 metres relay event at the 2019 World Athletics Championships.
The women's 4 × 400 metres relay at the 2019 World Athletics Championships was held at the Khalifa International Stadium in Doha, Qatar, from 5 to 6 October 2019. In the final the Jamaican team were initially disqualified, but were reinstated as the bronze medallists upon appeal.
Italy has competed at the World Athletics Relays since first edition held in 2014, Italian teams have won a bronze medal in 2019.
Ukraine competed at the 2023 European Games, in Kraków and Małopolska, Poland, from 21 June to 2 July 2023. Ukraine entered 266 athletes in 27 sports. Ukrainian athletes did not qualify to compete in beach handball, padel and rugby sevens.
Doha 