2021 World Athletics U20 Championships – Mixed 4 × 400 metres relay
# 2021 World Athletics U20 Championships – Mixed 4 × 400 metres relay

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.

| Rank | Heat | Nation | Athletes | Time | Notes |
| - | - | - | - | - | - |
| 1 | 2 | Nigeria | Johnson Nnamani, Ella Onojuvwevwo, Opeyemi Deborah Oke, Bamidele Ajayi | 3:21.66 | Q, CR |
| 2 | 1 | India | Abdul Razak Cherankulangara Rasheed, Priya Mohan, Summy, Kapil | 3:23.36 | Q, CR |
| 3 | 1 | Czech Republic | Tadeáš Plaček, Nikola Bišová, Lucie Zavadilová, David Bix | 3:24.15 | Q, SB |
| 4 | 1 | Jamaica | Antonio Hanson, Alliah Baker, Dejanea Oakley, Shaemar Uter | 3:24.65 | Q, SB |
| 5 | 1 | Poland | Mateusz Matera, Olga Rzeszewska, Alicja Kaczmarek, Michał Wróbel | 3:24.69 | q, SB |
| 6 | 1 | Sri Lanka | Isuru Bans, Tharushi M.Dissanayaka, Lakshima Mendis, Dilshan Udunuwara | 3:26.62 | q, PB |
| 7 | 2 | Italy | Stefano Grendene, Federica Pansini, Angelica Ghergo, Francesco Pernici | 3:28.00 | Q, SB |
| 8 | 2 | South Africa | Ryan Jordan, Angelique Strydom, Charlize Eilerd, Adrian John Swart | 3:30.43 | Q, SB |
| 9 | 2 | Ecuador | Freddy Vásquez, Evelin Mercado, Xiomara Ibarra, Alan Minda | 3:31.90 | SB |
| | 2 | Kenya | Kennedy Kimeu, Sylvia Chelangat, Loice Nyanchoka Morara, Elkanah Kiprotich Chemelil | DQ | TR17.3.1 |
| | 1 | Ethiopia | Nigist Getachew, Wegene Addisu, Amarech Zago, Melkeneh Azize | DQ | TR17.3.1 |

### Final

The final was held on 18 August at 17:15.

| Rank | Lane | Nation | Athletes | Time | Notes |
| - | - | - | - | - | - |
| | 5 | Nigeria | Johnson Nnamani, Imaobong Nse Uko, Opeyemi Deborah Oke, Bamidele Ajayi | 3:19.70 | CR |
| | 2 | Poland | Michał Wróbel, Kornelia Lesiewicz, Alicja Kaczmarek, Patryk Grzegorzewicz | 3:19.80 | SB |
| | 3 | India | Barath Sridhar, Priya Mohan, Summy, Kapil | 3:20.60 | SB |
| 4 | 8 | Jamaica | Shaemar Uter, Alliah Baker, Aalliyah Francis, Malachi Johnson | 3:23.04 | SB |
| 5 | 7 | South Africa | Antonie Matthys Nortje, Precious Molepo, Angelique Strydom, Lythe Pillay | 3:23.98 | SB |
| 6 | 4 | Italy | Stefano Grendene, Alexandra Almici, Alessandra Iezzi, Tommaso Boninti | 3:24.26 | SB |
| 7 | 1 | Sri Lanka | Dilshan Udunuwara, Tharushi M.Dissanayaka, Lakshima Mendis, Isuru Bans | 3:26.39 | PB |
| 8 | 6 | Czech Republic | Tadeáš Plaček, Nikola Bišová, Lucie Zavadilová, David Bix | 3:28.51 | |
