Heats
lundi 10 septembre 2018, 10h30 GMT – 18h00 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Erin Gallagher | South Africa | 58.08″ |
| 2 |  Farida Osman | Egypt | + 0.08″ |
| 3 | Farah Ben Khelil | Tunisia | + 0.95″ |
| 4 | Nesrine Medjahed | Algeria | + 1.39″ |
| 5 | Jeanne Boutbien | Senegal | + 1.97″ |
| 6 | Majda Chebaraka | Algeria | + 2.44″ |
| 7 | Catarina Sousa | Angola | + 2.49″ |
| 8 | Lesley C Blignaut | South Africa | + 2.54″ |
| 9 | Noura Mana | Morocco | + 2.64″ |
| 10 | Menna Kchouk | Tunisia | + 2.72″ |
| 11 | Yasmeen Boutouil | Morocco | + 3.28″ |
| 12 | Imara-Bella Thorpe | Kenya | + 3.5″ |
| 13 | Tessa Ip Hen Chung | Mauritius | + 3.53″ |
| 14 | Therese Soukup | Seychelles | + 5.13″ |
| 15 | Jayla Pina | Cape Verde | + 5.47″ |
| 16 | Lia Lima | Angola | + 6.67″ |
| 17 | Ssubi Katumba | Uganda | + 6.83″ |
| 18 | Samantha Rakotovelo | Madagascar | + 7.36″ |
| 19 | Denise Mabasso | Mozambique | + 9.65″ |
| 20 | Domingas Munhemeze | Mozambique | + 10.13″ |
| 21 | Nafissath Radji | Benin | + 17.64″ |
| Antsa Victoria Rabesahala | Madagascar | DNS | |
| Chukwuemeke Nkem | Nigeria | DNS | |
| Okolugbo Chinoye | Nigeria | DNS |