Semifinal
dimanche 6 août 2017, 22h15 GMT – 22h15 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Kipyegon Bett | Kenya | 1′ 45.02″ |
| 2 | Mohammed Aman | Ethiopia | + 0.38″ |
| 3 |  Brandon McBride | Canada | + 0.51″ |
| 4 |  Pierre-ambroise Bosse | FFA - France Athlétisme | + 0.61″ |
| 5 | Kyle Langford | Great Britain | + 0.79″ |
| 6 | Thiago Andrè | Brazil | + 0.81″ |
| 7 |  Marcin Lewandowski | Poland | + 0.91″ |
| 8 | Emmanuel Kipkurui Korir | Kenya | + 1.06″ |
| 9 | Michal Rozmys | Poland | + 1.08″ |
| 10 | Adam Kszczot | Poland | + 1.22″ |
| 11 | Andreas Kramer | Sweden | + 1.23″ |
| 12 |  Donavan Brazier | United States | + 1.25″ |
| 13 |  Nijel Amos | Botswana | + 1.27″ |
| 14 | Drew Windle | United States | + 1.31″ |
| 15 |  Ferguson Rotich | Kenya | + 1.47″ |
| 16 | Álvaro De Arriba | Spain | + 1.62″ |
| 17 | Isaiah Harris | United States | + 1.64″ |
| 18 | Ebrahim Remaid Al Zoufari | Kuwait | + 1.66″ |
| 19 | Guy Learmonth | Great Britain | + 1.73″ |
| 20 |  Elliot Giles | Great Britain | + 1.93″ |
| 21 | Antoine Gakeme | Burundi | + 2.06″ |
| 22 | Abdessalem Ayouni | Tunisia | + 2.37″ |
| 23 | Kevin López | Spain | + 2.6″ |
| Thijmen Kupers | Netherlands | DNS |