| Final 15:10 | Team | time | L | Q. | React. | | 1. Louis J. Van Zyl | RSA | 48.51s | 5 | 2. | 0.301s | | 2. Cornel Fredericks | RSA | 48.79s | 6 | 3. | 0.291s | | 3. Mamadou Kasse Hanne | SEN | 49.10s | 4 | 1. | 0.263s | | 4. Vincent Kiplangat Koskei | KEN | 49.70s | 3 | 4. | 0.230s | | 5. Kurt Leonel Da R. Couto | MOZ | 49.79s | 7 | 6. | 0.272s | | 6. Mohamed Seghaier | TUN | 50.05s | 8 | 5. | 0.290s | | 7. Antonio Vieillesse | MRI | 51.08s | 2 | 8. | 0.198s | | 8. Hafz Hussein | SUD | 52.02s | 1 | 7. | 0.168s |
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| Heats. Thursday 29.07 17:05. First 3 and Best 2 progress. |
| Heat 1 | Team | time | L | Rk. | | 1. Mamadou Kasse Hanne | SEN | 49.45s | 3 | 1. | | 2. Cornel Fredericks | RSA | 49.82s | 6 | 3. | | 3. Mohamed Seghaier | TUN | 50.28s | 7 | 5. | | 1. Antonio Vieillesse | MRI | 51.35s | 4 | 8. | | 5. Kiprono Koskei | KEN | 51.85s | 5 | 10. | | 6. Bonface Mucheru Tumuti | KEN | 51.94s | 2 | 11. | | 7. Bernabe Bationo | BUR | 51.99s | 8 | 12. | | 8. Julien Gaudefroy Diamond | CIV | 53.71s | 4 | 15. |
| Heat 2 | Team | time | L | Rk. | | 1. Louis J. Van Zyl | RSA | 49.73s | 4 | 2. | | 2. Vincent Kiplangat Koskei | KEN | 49.99s | 2 | 4. | | 3. Kurt Leonel Da R. Couto | MOZ | 50.62s | 7 | 6. | | 4. Hafz Hussein | SUD | 51.21s | 3 | 7. | | 5. Hamza Deyaf | LBA | 51.50s | 8 | 9. | | 6. Daniel Lagamang | BOT | 52.36s | 6 | 13. | | 7. Valery Komenan | CIV | 52.82s | 1 | 14. | | 8. Zelalem Chimdessa Tiyye | ETH | 57.51s | 5 | 16. |
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