2010 African Championships in Athletics – Women's 400 metres

Qualification: First 3 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	4	Amantle Montsho	Botswana	51.66	Q
2	1	Amy Mbacke Thiam	Senegal	52.98	Q
3	1	Rachael Nachula	Zambia	53.29	Q
4	2	Ndeye Fatou Soumah	Senegal	53.38	Q
5	2	Estie Wittstock	South Africa	53.59	Q
6	3	Shade Abugan	Nigeria	53.64	Q
7	1	Kgalalelo Sefo	Botswana	53.88	Q
8	2	Emily Nanziri	Uganda	54.10	Q
9	4	Nawal El Jack	Sudan	54.35	Q
10	1	Josephine Ehigie	Nigeria	54.48	q, SB
11	2	Mantegbosh Melese	Ethiopia	55.08	q
12	2	Rabecca Nachula	Zambia	55.32	q
13	4	Catherine Nandi	Kenya	55.40	Q
14	4	Fatou Diabaye	Senegal	55.54	q
15	3	Fayza Guma	Sudan	55.56	Q
16	3	Elizabeth Amolofo	Ghana	55.69	Q
17	1	Grace Miroyo Kidake	Kenya	55.76
18	2	Kemei Emily Cherotich	Kenya	55.80
19	3	Oarabile Babolayi	Botswana	55.86
20	3	Agnes Aneno	Uganda	56.12
21	2	Annabelle Lascar	Mauritius	56.88
22	1	Tjipekapora Herunga	Namibia	57.03
23	1	Emebet Fikadu	Ethiopia	57.37
24	4	Fantu Megso	Ethiopia	58.32
25	4	Claudine Rosine Yemalin	Benin	58.74
26	4	Elisa Cossa	Mozambique	58.87
27	3	Jeanne D'Arc Uwamahoro	Rwanda	59.12
28	4	Natacha Ngoye	Republic of the Congo	1:02.01
29	1	Antonieta Cape	Guinea-Bissau	1:02.88
	2	Jenifer Chikwasa Msosa	Malawi	DNS
	3	Lydie Besme Haoua	Chad	DNS
	3	Nathalie Itok	Cameroon	DNS

Qualification: First 3 of each semifinal (Q) and the next 2 fastest (q) qualified for the final.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Amantle Montsho	Botswana	50.39	Q
2	2	Shade Abugan	Nigeria	52.28	Q
3	1	Amy Mbacke Thiam	Senegal	52.48	Q
4	1	Ndeye Fatou Soumah	Senegal	52.53	Q
5	1	Estie Wittstock	South Africa	52.95	Q
6	1	Nawal El Jack	Sudan	53.57	q
7	1	Rabecca Nachula	Zambia	53.69	q
8	2	Rachael Nachula	Zambia	53.95	Q
9	1	Josephine Ehigie	Nigeria	53.77	SB
10	1	Kgalalelo Sefo	Botswana	54.04
11	2	Emily Nanziri	Uganda	54.37
12	2	Elizabeth Amolofo	Ghana	54.43	SB
13	1	Catherine Nandi	Kenya	54.72
14	2	Mantegbosh Melese	Ethiopia	54.92
15	2	Fayza Guma	Sudan	55.60
16	2	Fatou Diabaye	Senegal	56.35