2008 World Junior Championships in Athletics – Men's 400 metres

The men's 400 metres event at the 2008 World Junior Championships in Athletics was held in Bydgoszcz, Poland, at Zawisza Stadium on 8, 9 and 10 July.

Final
10 July

Semifinals
9 July

Heats
8 July

Participation
According to an unofficial count, 58 athletes from 42 countries participated in the event. • 🇦🇺 australia (1)

• undefined (2)

• undefined (1)

• 🇧🇪 belgium (1)

• 🇨🇦 canada (1)

• 🇰🇲 comoros (1)

• 🇨🇿 czech republic (1)

• undefined (1)

• 🇩🇲 dominica (1)

• 🇪🇹 ethiopia (1)

• undefined (1)

• 🇫🇷 france (2)

• undefined (1)

• 🇩🇪 germany (2)

• undefined (1)

• undefined (2)

• 🇭🇺 hungary (2)

• 🇮🇪 ireland (1)

• 🇮🇹 italy (2)

• 🇯🇲 jamaica (2)

• 🇯🇵 japan (2)

• 🇰🇪 kenya (1)

• undefined (1)

• 🇲🇴 macao (1)

• 🇲🇽 mexico (1)

• 🇲🇸 montserrat (1)

• undefined (1)

• undefined (2)

• 🇳🇴 norway (1)

• 🇵🇱 poland (2)

• undefined (1)

• 🇷🇺 russia (1)

• undefined (2)

• 🇸🇰 slovakia (1)

• undefined (1)

• 🇪🇸 spain (2)

• undefined (1)

• undefined (2)

• 🇺🇦 ukraine (2)

• undefined (2)

• 🇺🇸 united states (2)

• 🇾🇪 yemen (1)