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 was a formerly run British and American event, until metrication was completed in the 1970s.
60 metres, or 60-meter dash, is a sprint event in track and field. It is a championship event for indoor championships, normally dominated by the best outdoor 100 metres runners. At indoor events, the 60 metres is run on lanes set out in the middle of the 'field', as is the hurdles event over the same distance, thus avoiding some of the effects of the banked track encircling the venue, upon which other track events in indoor events are run. At outdoor venues it is a rare distance, at least for senior athletes. The format of the event is similar to other sprint distances. The sprinters follow three initial instructions: 'on your marks', instructing them to take up position in the starting blocks; 'set', instructing them to adopt a more efficient starting posture, which also isometrically preloads their muscles. This will enable them to start faster. The final instruction is the firing of the starter's pistol. Upon hearing this the sprinters stride forwards from the blocks.
60 metres hurdles is a distance in hurdling which is generally run in indoor competitions. It is equivalent with the first 5 hurdles of a standard outdoor hurdle race. The current women's and men's world records are 7.68 seconds and 7.29 seconds, respectively.
Carmelita Jeter is a retired American sprinter, who competed in the 60 metres, 100 m and 200 m. For over a decade, between 2009 and 2021, Jeter held the title as "Fastest woman alive" after running a 100 m personal best of 10.64 seconds at the 2009 Shanghai Golden Grand Prix. In the 100 m, she was the 2011 world champion and the 2012 silver medalist. She is also a three-time Olympic medallist.
Genzebe Dibaba Keneni is an Ethiopian middle- and long-distance runner. A 1500 metres 2016 Rio Olympics silver medalist, she won a gold medal in this event and a bronze in the 5000 metres at the 2015 World Championships. Genzebe is the current world record holder for the 1500m, and the indoor events of the one mile, 3000m and 5000m. She holds the distinction of possessing the most world records by one woman in track history, with her current haul of four, plus two world bests.
Ivana Vuleta is a Serbian long jumper, a two-time World indoor champion, a two-time European champion, a three-time European indoor champion and a four-time Diamond League Trophy Winner.
Murielle Ahouré is an Ivorian sprinter who competes in the 60 meters, 100 m and 200 m. She was a double silver medalist at the 2013 world championships in Moscow. She came second in both the 100 and 200 meters at this event. Ahouré was the gold medallist in the 60 m at the 2018 IAAF World Indoor Championships.
Kendra "Keni" Harrison is an American hurdler. Harrison held the world record in the women's 100 metres hurdles with a time of 12.20 seconds, set on July 22, 2016 at the London Müller Anniversary Games, breaking the previous world record of 12.21 seconds achieved nearly 28 years earlier by Bulgarian athlete Yordanka Donkova.
Margit Nemesházi (HUN)
Annegret Richter (FRG)
Petra Kandarr (GDR)
Irena Szewinska (POL)
Mona-Lisa Pursiainen (FIN)
Nelli Cooman (NED)
Merlene Ottey (JAM)
Irina Privalova (RUS)
Irina Privalova (RUS)