The Mixed 4 × 400 metres relay at the 2021 IAAF World U20 Championships was held at the Kasarani Stadium on 18 August.

Records The event of 4×400m mixed relay was put for the first time in World Athletics U20 Championships in 2021. Therefore, there was no Championship Record earlier.

Results Heats Qualification: First 3 of each heat ( Q ) plus the 2 fastest times ( q ) qualified for the final.

RankHeatNationAthletesTimeNotes 1 2 Johnson Nnamani, Ella Onojuvwevwo, Opeyemi Deborah Oke, Bamidele Ajayi 3:21.66 , CR 2 1 Abdul Razak Cherankulangara Rasheed, Priya Mohan, Summy, Kapil 3:23.36 , CR 3 1 Tadeáš Plaček, Nikola Bišová, Lucie Zavadilová, David Bix 3:24.15 , 4 1 Antonio Hanson, Alliah Baker, Dejanea Oakley, Shaemar Uter 3:24.65 , 5 1 Mateusz Matera, Olga Rzeszewska, Alicja Kaczmarek, Michał Wróbel 3:24.69 , 6 1 Isuru Bans, Tharushi M.Dissanayaka, Lakshima Mendis, Dilshan Udunuwara 3:26.62 , 7 2 Stefano Grendene, Federica Pansini, Angelica Ghergo, Francesco Pernici 3:28.00 , 8 2 Ryan Jordan, Angelique Strydom, Charlize Eilerd, Adrian John Swart 3:30.43 , 9 2 Freddy Vásquez, Evelin Mercado, Xiomara Ibarra, Alan Minda 3:31.90 2 Kennedy Kimeu, Sylvia Chelangat, Loice Nyanchoka Morara, Elkanah Kiprotich Chemelil 1 Nigist Getachew, Wegene Addisu, Amarech Zago, Melkeneh Azize

Final The final was held on 18 August at 17:15. RankLaneNationAthletesTimeNotes 5 Johnson Nnamani, Imaobong Nse Uko, Opeyemi Deborah Oke, Bamidele Ajayi 3:19.70 CR 2 Michał Wróbel, Kornelia Lesiewicz, Alicja Kaczmarek, Patryk Grzegorzewicz 3:19.80 3 Barath Sridhar, Priya Mohan, Summy, Kapil 3:20.60 4 8 Shaemar Uter, Alliah Baker, Aalliyah Francis, Malachi Johnson 3:23.04 5 7 Antonie Matthys Nortje, Precious Molepo, Angelique Strydom, Lythe Pillay 3:23.98 6 4 Stefano Grendene, Alexandra Almici, Alessandra Iezzi, Tommaso Boninti 3:24.26 7 1 Dilshan Udunuwara, Tharushi M.Dissanayaka, Lakshima Mendis, Isuru Bans 3:26.39 8 6 Tadeáš Plaček, Nikola Bišová, Lucie Zavadilová, David Bix 3:28.51

References