The men's 400 metres hurdles event at the 2014 World Junior Championships in Athletics was held in Eugene, Oregon, USA, at Hayward Field on 23, 24 and 25 July.
[1][2][3][4][5][6] 25 July Start time: 19:33 Temperature: 27 °C Humidity: 37 % 24 July First 2 in each heat (Q) and the next 2 fastest (q) advance to the Final First 2 in each heat (Q) and the next 2 fastest (q) advance to the Final 25 July Start time: 12:23 Temperature: 21 °C Humidity: 53% 25 July Start time: 12:29 Temperature: 21 °C Humidity: 53% 25 July Start time: 12:35 Temperature: 21 °C Humidity: 53% 23 July First 2 in each heat (Q) and the next 8 fastest (q) advance to the Semi-Finals First 2 in each heat (Q) and the next 8 fastest (q) advance to the Semi-Finals 25 July Start time: 12:09 Temperature: 16 °C Humidity: 88% 25 July Start time: 12:14 Temperature: 16 °C Humidity: 88% 25 July Start time: 12:20 Temperature: 16 °C Humidity: 88% 25 July Start time: 12:28 Temperature: 16 °C Humidity: 88% Note: IAAF Rule 168.7(a) - Trailing leg 25 July Start time: 12:31 Temperature: 16 °C Humidity: 88% Note: BIB 1020 Welington Zaza - Yellow Card - 162.5(b) Delaying the start 25 July Start time: 12:41 Temperature: 16 °C Humidity: 88% 25 July Start time: 12:46 Temperature: 16 °C Humidity: 88% 25 July Start time: 12:51 Temperature: 16 °C Humidity: 88% According to an unofficial count, 57 athletes from 43 countries participated in the event.