# 2016 IAAF World U20 Championships – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 2016 IAAF World U20 Championships was held at Zdzisław Krzyszkowiak Stadium on 21, 22 and 23 July.

## Medalists

| Gold | Jaheel Hyde Jamaica |
| Silver | Taylor McLaughlin United States |
| Bronze | Kyron McMaster British Virgin Islands |

## Records

Standing records prior to the 2016 IAAF World U20 Championships in Athletics :
| World Junior Record | Danny Harris (USA) | 48.02 | Los Angeles, United States | 17 June 1984 |
| Championship Record | Kerron Clement (USA) | 48.51 | Grosseto, Italy | 16 July 2004 |
| World Junior Leading | Jaheel Hyde (JAM) | 48.81 | Kingston, Jamaica | 1 July 2016 |

## Results
### Heats

Qualification: First 3 of each heat (Q) and the 3 fastest times (q) qualified for the semifinals.
| Rank | Heat | Name | Nationality | Time | Note |
| 1 | 2 | Kefilwe Mogawane | South Africa | 50.53 | Q |
| 2 | 4 | Jaheel Hyde | Jamaica | 50.81 | Q |
| 3 | 6 | Yoshiro Watanabe | Japan | 51.10 | Q |
| 4 | 2 | Taylor McLaughlin | United States | 51.28 | Q |
| 5 | 4 | Santhosh Tamilarasan | India | 51.46 | Q, PB |
| 6 | 5 | Mohamed Fares Jlassi | Tunisia | 51.49 | Q, PB |
| 7 | 1 | Mikael de Jesus | Brazil | 51.50 | Q |
| 8 | 5 | Ned Justeen Azemia | Seychelles | 51.50 | Q, NU20R |
| 9 | 5 | Tatsuhiro Yamamoto | Japan | 51.51 | Q |
| 10 | 1 | Timor Barrett | Jamaica | 51.56 | Q, PB |
| 11 | 7 | Rivaldo Leacock | Barbados | 51.62 | Q |
| 12 | 6 | Dominik Hufnagl | Austria | 51.72 | Q |
| 13 | 3 | Kyron McMaster | British Virgin Islands | 51.77 | Q |
| 14 | 5 | Wang Yijie | China | 51.83 | q |
| 15 | 2 | Hrvoje Čukman | Croatia | 51.89 | Q, PB |
| 16 | 4 | Gabriele Montefalcone | Italy | 51.91 | Q |
| 17 | 7 | Maksims Sinčukovs | Latvia | 52.04 | Q |
| 18 | 7 | Gong Debin | China | 52.11 | Q |
| 19 | 3 | Victor Coroller | France | 52.16 | Q |
| 20 | 3 | Kim Hyun-bin | South Korea | 52.27 | Q |
| 21 | 4 | Viktor Nylander | Sweden | 52.30 | q |
| 22 | 1 | Matěj Mach | Czech Republic | 52.32 | Q |
| 23 | 5 | Aftab Alam | India | 52.34 | q, PB |
| 24 | 4 | Uditha Chandrasena | Sri Lanka | 52.63 | |
| 25 | 1 | Branson Rolle | Bahamas | 52.69 | |
| 26 | 7 | Dylan Owusu | Belgium | 52.79 | |
| 27 | 3 | Sinan Ören | Turkey | 53.19 | |
| 28 | 7 | Alisher Pulotov | Tajikistan | 53.27 | PB |
| 29 | 6 | Mohamed Reda Elbilaoui | Morocco | 53.34 | Q |
| 30 | 7 | Dangel Cotto | Puerto Rico | 53.34 | |
| 31 | 7 | Federico Cesati | Italy | 53.35 | |
| 32 | 4 | Jassam Mohammed Mayil | Iraq | 53.48 | |
| 33 | 2 | Michael Ramos | Puerto Rico | 53.49 | |
| 34 | 2 | Ephraim Lerkin | Papua New Guinea | 53.67 | |
| 35 | 5 | Mohammadreza Rahmani | Iran | 53.71 | |
| 36 | 3 | Mohamed Amine Touati | Tunisia | 53.79 | |
| 37 | 3 | José Humberto Bermúdez | Guatemala | 53.89 | |
| 38 | 4 | Kiryl Borys | Belarus | 53.90 | |
| 39 | 1 | Adam Yakobi | Israel | 54.03 | |
| 40 | 3 | Pablo Andrés Ibáñez | El Salvador | 54.56 | PB |
| 41 | 1 | Yolver Cumache | Venezuela | 54.68 | |
| 42 | 1 | Omphemetse Poo | Botswana | 55.61 | |
| 43 | 5 | Nicholus Kiprotich Chirchir | Kenya | 56.90 | |
| | 6 | Callum MacNab | Canada | DNF | q |
| | 6 | Nomenjanahary Rakotoarimiandry | Madagascar | DNF | |
| | 2 | Joshuán Berrios | Colombia | DQ | R163.3(a) |
| | 2 | Timothy Emoghene | Nigeria | DQ | R163.3(a) |
| | 6 | Predea Manounou | France | DQ | 168.7(a) |
| | 6 | Justin Alexander | United States | DQ | 163.2(b) |

### Semifinals

Qualification: First 2 of each heat (Q) and the 2 fastest times (q) qualified for the final.
| Rank | Heat | Name | Nationality | Time | Note |
| 1 | 3 | Jaheel Hyde | Jamaica | 49.77 | Q |
| 2 | 3 | Taylor McLaughlin | United States | 50.25 | Q |
| 3 | 2 | Kyron McMaster | British Virgin Islands | 50.49 | Q, SB |
| 4 | 1 | Mohamed Fares Jlassi | Tunisia | 50.82 | Q, NU20R |
| 5 | 3 | Tatsuhiro Yamamoto | Japan | 50.84 | q |
| 6 | 3 | Mikael de Jesus | Brazil | 50.86 | q |
| 7 | 1 | Yoshiro Watanabe | Japan | 50.95 | Q |
| 8 | 3 | Dominik Hufnagl | Austria | 51.04 | PB |
| 9 | 2 | Gong Debin | China | 51.25 | Q |
| 10 | 3 | Victor Coroller | France | 51.35 | |
| 11 | 2 | Timor Barrett | Jamaica | 51.38 | PB |
| 12 | 1 | Santhosh Tamilarasan | India | 51.54 | |
| 13 | 1 | Ned Justeen Azemia | Seychelles | 51.64 | |
| 14 | 1 | Gabriele Montefalcone | Italy | 51.70 | |
| 15 | 1 | Hrvoje Čukman | Croatia | 51.82 | PB |
| 16 | 2 | Maksims Sinčukovs | Latvia | 51.89 | PB |
| 17 | 2 | Rivaldo Leacock | Barbados | 52.22 | |
| 18 | 1 | Wang Yijie | China | 52.28 | |
| 19 | 2 | Kim Hyun-bin | South Korea | 52.57 | |
| 20 | 3 | Viktor Nylander | Sweden | 52.79 | |
| 21 | 1 | Mohamed Reda Elbilaoui | Morocco | 53.49 | |
| 22 | 3 | Matěj Mach | Czech Republic | 53.49 | |
| 23 | 2 | Callum MacNab | Canada | 53.85 | |
| | 2 | Kefilwe Mogawane | South Africa | DNF | |
| | 2 | Aftab Alam | India | DQ | R163.3(a) |

### Final

| Rank | Lane | Name | Nationality | Time | Note |
| | 5 | Jaheel Hyde | Jamaica | 49.03 | |
| | 6 | Taylor McLaughlin | United States | 49.45 | PB |
| | 7 | Kyron McMaster | British Virgin Islands | 49.56 | NU20R |
| 4 | 3 | Mikael de Jesus | Brazil | 50.06 | |
| 5 | 2 | Tatsuhiro Yamamoto | Japan | 50.99 | |
| 6 | 8 | Gong Debin | China | 51.03 | |
| 7 | 9 | Yoshiro Watanabe | Japan | 51.09 | |
| 8 | 4 | Mohamed Fares Jlassi | Tunisia | 52.14 | |