| Lane | Bib | Name | Team | SB | PB |
|---|---|---|---|---|---|
| 1 | 255 | John Gigonyo | KDF | 50.17 | |
| 2 | 256 | William Mbevi | KDF | 51.22 | |
| 3 | 257 | Aron Koech | NPS | 50.45 | |
| 4 | 258 | Nicholas Chirchir | KDF | 49.3 | |
| 5 | 259 | Ezekiel Bett | KDF | 50.3 | |
| 6 | 260 | Edward Ngunjiri | KDF | 50.45 | |
| 7 | 261 | Patrick Muinde | 52.02 | ||
| 8 | 262 | Kipkorir Rotich | NPS | 50 |
