2010 World Junior Championships in Athletics – Women's 400 metres

The women's 400 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 20, 21 and 22 July.

Medalists

Gold	Shaunae Miller Bahamas
Silver	Margaret Etim Nigeria
Bronze	Bianca Răzor Romania

Results

Final

22 July

Rank	Name	Nationality	Time	Notes
	Shaunae Miller	Bahamas	52.52
	Margaret Etim	Nigeria	53.05
	Bianca Răzor	Romania	53.17
4	Stacey-Ann Smith	United States	53.42
5	Jody-Ann Muir	Jamaica	53.42
6	Bukola Abogunloko	Nigeria	53.74
7	Regina George	United States	53.83
8	Chantel Malone	British Virgin Islands	53.91

Semifinals

21 July

Semifinal 1

Rank	Name	Nationality	Time	Notes
1	Bukola Abogunloko	Nigeria	52.86	Q
2	Bianca Răzor	Romania	53.06	Q
3	Jody-Ann Muir	Jamaica	53.20	q
4	Regina George	United States	53.59	q
5	Anneliese Rubie	Australia	54.39
6	Gulustan Mahmood	Iraq	54.70
7	Christina Zwirner	Germany	54.86
8	Miho Shingu	Japan	55.66

Semifinal 2

Rank	Name	Nationality	Time	Notes
1	Margaret Etim	Nigeria	52.63	Q
2	Shaunae Miller	Bahamas	53.21	Q
3	Bárbara de Oliveira	Brazil	53.60
4	Ella Räsänen	Finland	53.73
5	Katherine Reid	Canada	53.80
6	Sade Sealy	Barbados	54.90
7	Julia Schaefers	Germany	55.09
	Yuliya Yurenia	Belarus	DQ	IAAF rule 162.7

Semifinal 3

Rank	Name	Nationality	Time	Notes
1	Chantel Malone	British Virgin Islands	53.37	Q
2	Stacey-Ann Smith	United States	53.48	Q
3	Chanice Chase	Canada	53.72
4	Maria Lebedeva	Russia	53.86
5	Rashan Brown	Bahamas	54.14
6	Adelina Pastor	Romania	54.47
7	Janieve Russell	Jamaica	55.16
8	Marta Maffioletti	Italy	55.72

Heats

20 July

Heat 1

Rank	Name	Nationality	Time	Notes
1	Maria Lebedeva	Russia	54.02	Q
2	Regina George	United States	54.17	Q
3	Janieve Russell	Jamaica	54.65	Q
4	Yuliya Yurenia	Belarus	54.67	Q
5	Rashan Brown	Bahamas	54.85	q
6	Sandra Wagner	Sweden	55.28
7	Shawna Fermin	Trinidad and Tobago	55.50
8	Romana Tea Kirinic	Croatia	56.27

Heat 2

Rank	Name	Nationality	Time	Notes
1	Bukola Abogunloko	Nigeria	53.38	Q
2	Stacey-Ann Smith	United States	53.41	Q
3	Chanice Chase	Canada	53.61	Q
4	Adelina Pastor	Romania	53.74	Q
5	Christina Zwirner	Germany	54.57	q
6	Deseree King	U.S. Virgin Islands	56.73
7	Hristina Risteska	North Macedonia	58.80
8	Kristie Baillie	New Zealand	59.98

Heat 3

Rank	Name	Nationality	Time	Notes
1	Shaunae Miller	Bahamas	52.45	Q
2	Margaret Etim	Nigeria	52.48	Q
3	Ella Räsänen	Finland	53.87	Q
4	Anneliese Rubie	Australia	54.29	Q
5	Miho Shingu	Japan	54.79	q
6	Liona Rebernik	Slovenia	55.60
7	Ashley Kelly	British Virgin Islands	55.71

Heat 4

Rank	Name	Nationality	Time	Notes
1	Chantel Malone	British Virgin Islands	52.97	Q
2	Bárbara de Oliveira	Brazil	53.35	Q
3	Katherine Reid	Canada	54.48	Q
4	Marta Maffioletti	Italy	54.98	Q
5	Sparkle McKnight	Trinidad and Tobago	55.01
6	Liliana Núñez	Ecuador	56.30
7	Kanika Beckles	Grenada	58.95

Heat 5

Rank	Name	Nationality	Time	Notes
1	Jody-Ann Muir	Jamaica	53.83	Q
2	Bianca Răzor	Romania	53.85	Q
3	Gulustan Mahmood	Iraq	54.62	Q
4	Julia Schaefers	Germany	54.65	Q
5	Sade Sealy	Barbados	54.88	q
6	Elin Moraiti	Sweden	55.95
7	Malama Dosso	France	56.40
8	Francesca Xuereb	Malta	56.61

Participation

According to an unofficial count, 38 athletes from 28 countries participated in the event.

• Australia (1)
• Bahamas (2)
• Barbados (1)
• Belarus (1)
• Brazil (1)
• British Virgin Islands (2)
• Canada (2)
• Croatia (1)
• Ecuador (1)
• Finland (1)
• France (1)
• Germany (2)
• Grenada (1)
• Iraq (1)
• Italy (1)
• Jamaica (2)
• Japan (1)
• North Macedonia (1)
• Malta (1)
• New Zealand (1)
• Nigeria (2)
• Romania (2)
• Russia (1)
• Slovenia (1)
• Sweden (2)
• Trinidad and Tobago (2)
• United States (2)
• U.S. Virgin Islands (1)