| | Event type

4 × 400 metres Relay, Mixed

Date	30 – 31 July 2021
Status	Olympic
Location	Japan National Stadium, Kasumigaoka, Shinjuku, Tokyo
Participants	76 from 15 countries

The mixed relay event had been held at the 2019 World Championships, won by the United States, but there was really no way to make predictions for the event, as nobody knew which athletes would compete for their nations. The two heats ended up being the most complex part of the event.

The USA ostensibly won the first heat in 3:11.39 followed by the Dominican Republic but the two teams were soon disqualified for an exchange irregularity. For the US Lynna Irby had lined up in the wrong spot on the first exchange while waiting for Elija Godwin. Both teams protested the DQ and it was upheld as the United States’ case was that Irby had been directed to the wrong spot for the exchange by a track official. For the Dominican Republic the announcement was that “the Dominican Republic athlete correctly positioned herself in position 2 in response to an incorrect original placement. There was no interference or adverse consequence to any other team as result of the action by the Dominican Republic athlete.”

Belgium, Germany, Ireland, the Netherlands, Poland, and Spain then counter-appealed against the decision to reinstate the two teams. Germany and Spain had the most interest as they would be ninth and tenth in qualifying if both teams were reinstated. Eventually Germany’s appeal was also upheld and the final proceeded with nine teams running.

In the final, all nine teams ran the M/F/F/M order, which had predominated at the Doha Worlds. The leader after the first leg was the Netherlands, as Liemarvin Bonevacia ran 44.8. The Dominican Republic was in fourth place at the first exchange, but Marileidy Paulino ran 48.7 for the fastest female leg of the competition, and handed off first for the third leg.

For the Netherlands, only fourth after the second leg, 400 hurdler Femke Bol ran the third leg and brought them back into the lead, running 49.74. At the bell the Dominican Republic was in second, with Poland third, and the United States fourth. Poland’s Kajetan Duszynski then ran a 44.38 leg to bring Poland home with the gold medal, as the Dominicans won silver, and the USA finished third, the Netherlands fading off the podium into fourth place.

Pos	Number	Competitors	NOC	R1	Final
1	–	Poland	POL	3:10.44 (1 h2)	3:09.87 (1)	Gold
		Karol Zalewski • Natalia Kaczmarek • Justyna Święty-Ersetic • Kajetan Duszyński • Dariusz Kowaluk • Iga Baumgart-Witan • Małgorzata Hołub-Kowalik • Dominika Baćmaga (DNS) • Kornelia Lesiewicz (DNS) • Patryk Grzegorzewicz (DNS) • Jakub Krzewina (DNS)
2	–	Dominican Republic	DOM	3:12.74 (2 h1)	3:10.21 (2)	Silver
		Lidio Féliz • Marileidy Paulino • Anabel Medina • Alexander Ogando • Luguelín Santos
3	–	United States	USA	3:11.39 (1 h1)	3:10.22 (3)	Bronze
		Trevor Stewart • Kendall Ellis • Kaylin Whitney • Vernon Norwood • Elija Godwin • Lynna Irby • Taylor Manson • Bryce Deadmon
4	–	Netherlands	NED	3:10.69 (2 h2)	3:10.36 (4)
		Liemarvin Bonevacia • Lieke Klaver • Femke Bol • Ramsey Angela • Jochem Dobber • Lisanne de Witte • Laura de Witte (DNS) • Hanneke Oosterwegel (DNS) • Nout Wardenburg (DNS)
5	–	Belgium	BEL	3:12.75 (3 h1)	3:11.51 (5)
		Dylan Borlée • Imke Vervaet • Camille Laus • Kévin Borlée • Alexander Doom • Jonathan Borlée
6	–	Great Britain	GBR	3:11.95 (4 h2)	3:12.07 (6)
		Niclas Baker • Nicole Yeargin • Emily Diamond • Cameron Chalmers • Zoey Clark • Lee Thompson • Joe Brier (DNS)
7	–	Jamaica	JAM	3:11.76 (3 h2)	3:14.95 (7)
		Sean Bailey • Stacey-Ann Williams • Tovea Jenkins • Karayme Bartley • Junelle Bromfield • Tiffany James (DNS) • Javeir Brown (DNS) • Rusheen McDonald (DNS)
8	–	Ireland	IRL	3:12.88 (4 h1)	3:15.04 (8)
		Cillin Greene • Phil Healy • Sophie Becker • Chris O'Donnell
AC r2/2	–	Germany	GER	3:12.94 (5 h1)	[DQ] (DQ)
		Marvin Schlegel • Corinna Schwab • Nadine Gonska • Manuel Sanders • Ruth Spelmeyer-Preuß • Hannah Mergenthaler (DNS) • Alica Schmidt (DNS) • Marc Koch (DNS)
10	–	Spain	ESP	3:13.29 (6 h1)	–
		Samuel García • Laura Bueno • Aauri Bokesa • Bernat Erta • Sara Gallego (DNS)
11	–	Italy	ITA	3:13.51 (5 h2)	–
		Edoardo Scotti • Alice Mangione • Rebecca Borga • Vladimir Aceti • Giancarla Trevisan (DNS) • Brayan Lopez (DNS)
12	–	Nigeria	NGR	3:13.60 (7 h1)	–
		Emmanuel Ojeli • Imaobong Nse Uko • Samson Nathaniel • Patience Okon George • Glory Patrick (DNS) • Chidi Okezie (DNS)
13	–	Ukraine	UKR	3:14.21 (6 h2)	–
		Mykyta Barabanov • Kateryna Klymiuk • Alina Lohvynenko • Oleksandr Pohorilko
14	–	Brazil	BRA	3:15.89 (7 h2)	–
		Pedro Burmann • Tiffani Marinho • Tábata Vitorino • Anderson Henriques
15	–	India	IND	3:19.93 (8 h2)	–
		Mohammad Anas Yahiya • Revathi Veeramani • Subha Venkatesan • Arokia Rajiv • Alex Antony (DNS) • Sarthak Bhambri (DNS)

Round One

Date	30 July 2021 — 20:00
Format	Top three in each heat and next two fastest advanced to the final.

Pos	Team	NOC	Time (automatic)	Reaction Time
1	Poland	POL	3:10.44	0.156	Q
2	Netherlands	NED	3:10.69	0.178	Q
3	United States	USA	3:11.39	0.182	Q
4	Jamaica	JAM	3:11.76	0.180	Q
5	Great Britain	GBR	3:11.95	0.189	q
6	Dominican Republic	DOM	3:12.74	0.253	Q
7	Belgium	BEL	3:12.75	0.177	Q
8	Ireland	IRL	3:12.88	0.137	q
9	Germany	GER	3:12.94	0.189	q
10	Spain	ESP	3:13.29	0.176
11	Italy	ITA	3:13.51	0.184
12	Nigeria	NGR	3:13.60	0.196
13	Ukraine	UKR	3:14.21	0.157
14	Brazil	BRA	3:15.89	0.185
15	India	IND	3:19.93	0.158

Heat #1

Time	20:00

Pos	Lane	Competitors	NOC	Time (Automatic)	Reaction Time	Split	Exchange
1	–	United States	USA	3:11.39	0.182	– (–)	– (–)	Q
Lead-Off	3927	Elija Godwin		–	–	45.6 (4)	– (–)
2nd Leg	3856	Lynna Irby-Jackson		–	–	49.7 (2)	1:35.44 (1)
3rd Leg	3867	Taylor Manson		–	–	50.96 (3)	2:26.40 (2)
Anchor	3919	Bryce Deadmon		–	–	44.99 (3)	– (–)
2	–	Dominican Republic	DOM	3:12.74	0.253	– (–)	– (–)	Q
Lead-Off	1685	Lidio Féliz		–	–	45.7 (5)	– (–)
2nd Leg	1684	Marileidy Paulino		–	–	49.6 (1)	1:35.44 (2)
3rd Leg	1683	Anabel Medina		–	–	51.07 (5)	2:26.51 (3)
Anchor	1688	Luguelín Santos		–	–	46.23 (6)	– (–)
3	–	Belgium	BEL	3:12.75	0.177	– (–)	– (–)	Q
Lead-Off	1195	Alexander Doom		–	–	45.6 (2)	– (–)
2nd Leg	1185	Imke Vervaet		–	–	51.0 (4)	1:36.70 (5)
3rd Leg	1178	Camille Laus		–	–	50.70 (2)	2:27.40 (4)
Anchor	1190	Jonathan Borlée		–	–	45.35 (5)	– (–)
4	–	Ireland	IRL	3:12.88	0.137	– (–)	– (–)	q
Lead-Off	2344	Cillin Greene		–	–	45.1 (1)	– (–)
2nd Leg	2333	Phil Healy		–	–	51.4 (6)	1:36.56 (3)
3rd Leg	2328	Sophie Becker		–	–	51.58 (7)	2:28.14 (6)
Anchor	2347	Chris O'Donnell		–	–	44.74 (2)	– (–)
5	–	Germany	GER	3:12.94	0.189	– (–)	– (–)	q
Lead-Off	2178	Marvin Schlegel		–	–	45.9 (6)	– (–)
2nd Leg	2137	Corinna Schwab		–	–	51.1 (5)	1:37.11 (7)
3rd Leg	2139	Ruth Spelmeyer-Preuß		–	–	51.27 (6)	2:28.38 (7)
Anchor	2177	Manuel Sanders		–	–	44.56 (1)	– (–)
6	–	Spain	ESP	3:13.29	0.176	– (–)	– (–)
Lead-Off	1793	Samuel García		–	–	45.6 (3)	– (–)
2nd Leg	1763	Laura Bueno		–	–	51.4 (7)	1:37.10 (6)
3rd Leg	1762	Aauri Bokesa		–	–	51.04 (4)	2:28.14 (5)
Anchor	1789	Bernat Erta		–	–	45.15 (4)	– (–)
7	–	Nigeria	NGR	3:13.60	0.196	– (–)	– (–)
Lead-Off	3061	Emmanuel Ojeli		–	–	46.0 (7)	– (–)
2nd Leg	3054	Imaobong Nse Uko		–	–	50.6 (3)	1:36.69 (4)
3rd Leg	3059	Samson Nathaniel		–	–	45.62 (1)	2:22.31 (1)
Anchor	3046	Patience Okon George		–	–	51.29 (7)	– (–)

Heat #2

Time	20:12

Pos	Lane	Competitors	NOC	Time (Automatic)	Reaction Time	Split	Exchange
1	–	Poland	POL	3:10.44	0.156	– (–)	– (–)	Q
Lead-Off	3196	Dariusz Kowaluk		–	–	45.4 (1)	– (–)
2nd Leg	3155	Iga Baumgart-Witan		–	–	50.2 (1)	1:35.72 (1)
3rd Leg	3162	Małgorzata Hołub-Kowalik		–	–	49.98 (1)	2:25.70 (1)
Anchor	3191	Kajetan Duszyński		–	–	44.74 (2)	– (–)
2	–	Netherlands	NED	3:10.69	0.178	– (–)	– (–)	Q
Lead-Off	3019	Jochem Dobber		–	–	45.5 (2)	– (–)
2nd Leg	2995	Lieke Klaver		–	–	50.3 (2)	1:35.93 (2)
3rd Leg	2991	Lisanne de Witte		–	–	50.39 (4)	2:26.32 (2)
Anchor	3013	Ramsey Angela		–	–	44.37 (1)	– (–)
3	–	Jamaica	JAM	3:11.76	0.180	– (–)	– (–)	Q
Lead-Off	2542	Sean Bailey		–	–	46.1 (6)	– (–)
2nd Leg	2458	Junelle Bromfield		–	–	50.5 (4)	1:36.68 (5)
3rd Leg	2534	Stacey-Ann Williams		–	–	50.28 (3)	2:26.96 (4)
Anchor	2545	Karayme Bartley		–	–	44.80 (3)	– (–)
4	–	Great Britain	GBR	3:11.95	0.189	– (–)	– (–)	q
Lead-Off	2040	Cameron Chalmers		–	–	45.8 (4)	– (–)
2nd Leg	2001	Zoey Clark		–	–	50.4 (3)	1:36.35 (4)
3rd Leg	2003	Emily Diamond		–	–	50.18 (2)	2:26.53 (3)
Anchor	2068	Lee Thompson		–	–	45.42 (5)	– (–)
5	–	Italy	ITA	3:13.51	0.184	– (–)	– (–)
Lead-Off	2438	Edoardo Scotti		–	–	45.5 (3)	– (–)
2nd Leg	2399	Alice Mangione		–	–	50.6 (5)	1:36.28 (3)
3rd Leg	2384	Rebecca Borga		–	–	51.88 (6)	2:28.16 (5)
Anchor	2413	Vladimir Aceti		–	–	45.35 (4)	– (–)
6	–	Ukraine	UKR	3:14.21	0.157	– (–)	– (–)
Lead-Off	3768	Mykyta Barabanov		–	–	46.6 (8)	– (–)
2nd Leg	3742	Kateryna Klymiuk		–	–	50.8 (6)	1:37.47 (7)
3rd Leg	3745	Alina Lohvynenko		–	–	51.22 (5)	2:28.69 (6)
Anchor	3795	Oleksandr Pohorilko		–	–	45.52 (6)	– (–)
7	–	Brazil	BRA	3:15.89	0.185	– (–)	– (–)
Lead-Off	1309	Pedro Burmann		–	–	46.0 (5)	– (–)
2nd Leg	1301	Tiffani Marinho		–	–	51.3 (7)	1:37.39 (6)
3rd Leg	1303	Tábata Vitorino		–	–	52.69 (7)	2:30.08 (7)
Anchor	1324	Anderson Henriques		–	–	45.81 (7)	– (–)
8	–	India	IND	3:19.93	0.158	– (–)	– (–)
Lead-Off	2307	Mohammad Anas Yahiya		–	–	46.1 (7)	– (–)
2nd Leg	2293	Revathi Veeramani		–	–	53.2 (8)	1:39.33 (8)
3rd Leg	2294	Subha Venkatesan		–	–	54.32 (8)	2:33.65 (8)
Anchor	2301	Arokia Rajiv		–	–	46.28 (8)	– (–)

Final Round

Date	31 July 2021 — 21:35

Pos	Lane	Competitors	NOC	Time (Automatic)	Reaction Time	Split	Exchange
1	–	Poland	POL	3:09.87	0.157	– (–)	– (–)	OR
Lead-Off	3212	Karol Zalewski		–	–	45.1 (3)	– (–)
2nd Leg	3164	Natalia Kaczmarek		–	–	49.9 (2)	1:35.02 (2)
3rd Leg	3182	Justyna Święty-Ersetic		–	–	50.47 (3)	2:25.49 (3)
Anchor	3191	Kajetan Duszyński		–	–	44.38 (2)	– (–)
2	–	Dominican Republic	DOM	3:10.21	0.184	– (–)	– (–)
Lead-Off	1685	Lidio Féliz		–	–	45.2 (4)	– (–)
2nd Leg	1684	Marileidy Paulino		–	–	48.7 (1)	1:33.97 (1)
3rd Leg	1683	Anabel Medina		–	–	51.34 (6)	2:25.31 (2)
Anchor	1687	Alexander Ogando		–	–	44.90 (5)	– (–)
3	–	United States	USA	3:10.22	0.167	– (–)	– (–)
Lead-Off	3970	Trevor Stewart		–	–	44.9 (2)	– (–)
2nd Leg	3845	Kendall Ellis		–	–	50.2 (3)	1:35.20 (3)
3rd Leg	3896	Kaylin Whitney		–	–	50.59 (4)	2:25.79 (4)
Anchor	3959	Vernon Norwood		–	–	44.43 (3)	– (–)
4	–	Netherlands	NED	3:10.36	0.209	– (–)	– (–)
Lead-Off	3015	Liemarvin Bonevacia		–	–	44.8 (1)	– (–)
2nd Leg	2995	Lieke Klaver		–	–	50.7 (5)	1:35.55 (4)
3rd Leg	2987	Femke Bol		–	–	49.74 (1)	2:25.29 (1)
Anchor	3013	Ramsey Angela		–	–	45.07 (6)	– (–)
5	–	Belgium	BEL	3:11.51	0.165	– (–)	– (–)
Lead-Off	1189	Dylan Borlée		–	–	45.5 (5)	– (–)
2nd Leg	1185	Imke Vervaet		–	–	51.0 (6)	1:36.62 (5)
3rd Leg	1178	Camille Laus		–	–	50.68 (5)	2:27.30 (6)
Anchor	1191	Kévin Borlée		–	–	44.21 (1)	– (–)
6	–	Great Britain	GBR	3:12.07	0.169	– (–)	– (–)
Lead-Off	2036	Niclas Baker		–	–	46.2 (9)	– (–)
2nd Leg	2034	Nicole Yeargin		–	–	50.6 (4)	1:36.92 (6)
3rd Leg	2003	Emily Diamond		–	–	50.36 (2)	2:27.28 (5)
Anchor	2040	Cameron Chalmers		–	–	44.79 (4)	– (–)
7	–	Jamaica	JAM	3:14.95	0.208	– (–)	– (–)
Lead-Off	2542	Sean Bailey		–	–	46.0 (7)	– (–)
2nd Leg	2534	Stacey-Ann Williams		–	–	51.1 (7)	1:37.20 (7)
3rd Leg	2494	Tovea Jenkins		–	–	52.24 (7)	2:29.44 (7)
Anchor	2545	Karayme Bartley		–	–	45.51 (8)	– (–)
8	–	Ireland	IRL	3:15.04	0.140	– (–)	– (–)
Lead-Off	2344	Cillin Greene		–	–	45.5 (6)	– (–)
2nd Leg	2333	Phil Healy		–	–	51.8 (8)	1:37.40 (8)
3rd Leg	2328	Sophie Becker		–	–	52.36 (8)	2:29.76 (8)
Anchor	2347	Chris O'Donnell		–	–	45.28 (7)	– (–)
DQ	–	Germany	GER	[DQ]	[0.182]	– (–)	– (–)		1
Lead-Off	2178	Marvin Schlegel		–	–	[46.2] ([8])	– (–)
2nd Leg	2137	Corinna Schwab		–	–	[1:09.6] ([9])	[1:55.89] ([9])
3rd Leg	2103	Nadine Gonska		–	–	– (–)	– (–)
Anchor	2177	Manuel Sanders		–	–	– (–)	– (–)