Semifinal 3
mercredi 8 août 2018, 20h31 GMT – 20h31 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Alex Wilson | Switzerland | 20.16″ |
| 2 |  Nethaneel Mitchell-Blake | Great Britain | + 0.19″ |
| 3 |  Solomon Bockarie | Netherlands | + 0.25″ |
| 4 |  Serhiy Smelyk | Ukraine | + 0.38″ |
| 5 |  Daniel Rodríguez | Spain | + 0.61″ |
| 6 | Andrew Howe | Italy | + 0.62″ |
| 7 | Aleixo-Platini Menga | Germany | + 0.67″ |
| 8 | Jonathan Quarcoo | Norway | + 0.91″ |