Heats
Qualification: First 3 teams of each heat (Q) plus the next 2 fastest (q) qualified for the final.
More information Rank, Heat ...
| Rank | Heat | Nation | Athletes | Time | Notes |
| 1 | 1 |  Nigeria | Divine Oduduru, Monzavous Edwards, Obinna Metu, Seye Ogunlewe | 39.51 | Q |
| 2 | 1 |  Ghana | Daniel Gyasi, Solomon Afful, Emmanuel Dassor, Tim Abeyie | 39.64 | Q |
| 3 | 2 |  Algeria | Mahmoud Hammoudi, Ali Bouguesba, Skander Djamil Athmani, Soufiane Bouhadda | 40.43 | Q |
| 4 | 2 |  Kenya | Stephen Barasa, Solomon Buoga, Tony Chirchir, Walter Moenga | 40.58 | Q |
| 5 | 2 |  Senegal | Mamadou Gueye, Moulaye Sonko, Moussa Dembélé, Daouda Diagne | 40.95 | Q |
| 6 | 1 |  Cameroon | Jean Tarcisus Batambock, Emmanuel Fortsi, Armand Tsoaoule, Idrissa Adam | 41.06 | Q |
| 7 | 2 |  Angola | Mauro Gaspar, Osvaldo Alexandre, Prisca Baltazar, Kevin Oliveira | 41.30 | q |
| 8 | 1 |  Seychelles | Dylan Sicobo, Ned Azemia, Neddy Marie, Leeroy Henriette | 41.86 | q |
| 2 |  South Africa | Henricho Bruintjies, Simon Magakwe, Akani Simbine, Ncincihli Titi | DQ | R170.7 [2] |
| 1 |  Ivory Coast | | DNS | |
| 1 |  Mali | | DNS | |
| 1 |  Morocco | | DNS | |
| 2 |  Ethiopia | | DNS | |
| 2 |  Republic of the Congo | | DNS | |
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Final
More information Rank, Lane ...
| Rank | Lane | Nation | Competitors | Time | Notes |
 | 4 | Nigeria | Ogho-Oghene Egwero, Monzavous Edwards, Obinna Metu, Mark Jelks | 38.80 | |
 | 6 | Ghana | Daniel Gyasi, Solomon Afful, Emmanuel Dassor, Tim Abeyie | 39.28 | |
 | 5 | Algeria | Mahmoud Hammoudi, Ali Bouguesba, Skander Djamil Athmani, Soufiane Bouhadda | 39.89 | NR |
| 4 | 3 | Kenya | Stephen Barasa, Solomon Buoga, Tony Chirchir, Walter Moenga | 40.10 | |
| 5 | 1 | Angola | Mauro Gaspar, Osvaldo Alexandre, Prisca Baltazar, Kevin Oliveira | 40.41 | NR |
| 5 | 8 | Cameroon | Armand Tsoaoule, Jean Tarcisus Batambock, Pierre Paul Bissek, Idrissa Adam | 40.42 | |
| 7 | 7 | Senegal | Moussa Dembélé, Amadou Ndiaye, Daouda Diagne, Moulaye Sonko | 40.50 | |
| 2 | Seychelles | | DNS | |
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