Kathy Butler is a long-distance runner who competes in the 10,000 metres and marathon, as well as cross country running and road running. Born in Scotland, she has competed internationally for both Great Britain and Canada.
Mohammed Ahmed is a Canadian long-distance runner. A three-time Olympian, he is his country's most successful athlete in long distance racing, being the first to medal in the 5000 metres at both the World Championships and the Olympic Games.
Elizabeth "Liz" Gleadle is a Canadian track and field athlete competing in the javelin throw. She is the national record holder and has twice won Pan American Games medals, thrice made the World Championship finals and is a three-time Olympian, making the final at the 2012 Summer Olympics, finishing 12th.
Michael Roeger is an Australian T46 athletics competitor. He competed at the 2008, 2012, and 2016 and 2020 Summer Paralympics athletics in middle distance and marathon running events. He has won one gold, one silver and four bronze medals at the World Para Athletics Championships and a bronze medal at the 2016 Rio Paralympics. His gold in the Men's T46 marathon at the 2019 World Para Athletics Championships was held as part of the London Marathon, set a new world record. In 2024, he is the holds the world record in the Men's 1500m T46 with a time of 3:36.51 set in 2017. Roeger competed at the 2020 Tokyo Paralympics in the marathon. He has been selected to compete at the 2024 Summer Paralympics, Paris,France - his fifth Games - in the Men's 1500 m T46.
Kate Van Buskirk is a Canadian Olympian, cross-country and track runner, with 18 years National Team experience. She won bronze for Canada at the 2014 Commonwealth Games in the 1500 m. She was named as an Athlete Director of Athletics Canada, in August 2019. She continues in this role as of August 2020.
Deborah Dawn "Debbie" Scott-Bowker is a Canadian former middle- and long-distance runner. A three-time Olympian for Canada, she reached the 1500 m final in 1984, and both the 1500 m and 3000 m finals in 1988. She was also a three-time World Championship finalist, reaching the 1500 m and 3000 m finals in 1987, and the 1500 m final in 1991.
Evan Dunfee is a Canadian race walker and Olympian. An Olympic and World medallist, Dunfee first set the Canadian record in the 50 kilometres race walk at the 2016 Summer Olympics, where he placed fourth. He went on to win bronze medals at the 2019 World Athletics Championships and the 2020 Summer Olympics, both of those the last time the 50 km was to be featured as an event.
Erin Teschuk is a Canadian middle- and long-distance runner. She represented her country at the 2015 World Championships in Beijing, the 2016 Summer Olympics in Rio, and the 2023 World Championships in Budapest. Collegiately, she competed for the North Dakota State Bison where she was a 15-time Summit League champion and 7-time All-American.
Gabriela Maria DeBues-Stafford is a Canadian middle- and long-distance runner. A two-time Olympian, she placed fifth in the women's 1500 metres at the 2020 Tokyo Olympics. DeBues-Stafford holds the NACAC area record over the indoor 5000 metres, which she set in February 2022.
Luke Mathews is an Australian middle-distance runner who competes in the 800 metres and 1500 metres. He represented his country in both events at the 2016 Summer Olympics. As well as in the 4 × 800 m at the 2017 IAAF World Relays, the 1500m at the 2017 IAAF World Championships and in both events at the 2018 Commonwealth Games. He also competed for Australia at 2019 World Athletics Championships in the 800 m.
Pierce LePage is a Canadian track athlete who competes in the decathlon. He is the 2023 World champion, and the first Canadian to win the decathlon title at the World Athletics Championships. LePage is also the 2022 World silver medalist, 2018 Commonwealth silver medallist, and 2019 Pan American bronze medallist. LePage represented Canada at the 2020 Summer Olympics, finishing in fifth place.
Djibouti competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. This was the nation's ninth appearance at the Summer Olympics; Djibouti did not field any athletes at the 2004 Summer Olympics in Athens. The delegation consisted of four athletes, three men and one women, competing in five events across three sports. Two athletes participated in the judo and swimming tournaments: Aden-Alexandre Houssein and Houssein Gaber Ibrahim. Athlete Ayanleh Souleiman, a returning competitor from the 2016 Rio Olympics competed in the men's 800 metres and 1500 metres events. Souhra Ali Mohamed, who had previously participated in the 2012 Summer Olympics competed in the women's 1500 metres event. Houssein lead the Djiboutian squad as the flagbearer in the opening ceremony with Souhra being the flagbearer for the closing ceremony.
John Eamon Gay is a Canadian track and field Olympic Finalist who specializes in the 3000 metres steeplechase.
Kyra Cheresse Constantine is a Canadian sprinter specializing in the 400 metres. She won the silver medal in the women's 4 × 400 metres relay event at the 2019 Pan American Games held in Lima, Peru. She also competed in the women's 400 metres event.
Lucia Stafford is a Canadian athlete specializing in middle-distance running. She is the 2017 Pan American U20 champion in the women's 1500 metres, and competed for Canada at the 2020 Tokyo Olympics. Stafford is the North American indoor record holder for the 1000 metres.
Eilish Flanagan is an Irish long distance runner. She competed in the 3000 metres steeplechase at the 2020 Olympics.
Andrew Coscoran is an Irish athlete who specializes in middle distance running.
Alycia Butterworth is a Canadian track and field athlete specializing in the 3000 metres steeplechase event.
Mauritania competed at the 2020 Summer Olympics in Tokyo which were held from 23 July to 8 August 2021. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed due to the COVID-19 pandemic. It was the nation's tenth appearance at the Summer Olympics since its debut in 1984. The delegation consisted of two athletes, one man and one woman, competing in two athletic events. Sprinters Abidine Abidine and Houlèye Ba represented Mauritania in the men's 5000 metres and women's 800 metres event, respectively. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Abidine and Houlèye lead the Mauritanian squad as the flagbearers in the opening ceremony. As of 2023, Mauritania, however, has yet to win its first ever Olympic medal.
Nathan Maguire is a British wheelchair racer. He won multiple medals at both the 2018 and 2021 World Para Athletics European Championships, and also won the 400 metres mixed class race at multiple British Athletics Championships. Maguire competed in the 4 × 400 metres relay T53/T54 at the 2016 Summer Paralympics, and competed in the 400 metres T54, 800 metres T54 and mixed 4 × 100 metres relay events at the delayed 2020 Summer Paralympics. He was part of the British team that won a silver medal in the 2020 Paralympic mixed 4 × 100 metres relay. He also competed for England at the 2018 Commonwealth Games, and won the 1500 metres T54 event at the 2022 Commonwealth Games.
Canada 
