1998 World Junior Championships in Athletics – Men's 100 metres

Final

29 July
Wind: +1.6m/s

Semifinals

29 July

Semifinal 1

Wind: +0.5m/s

Semifinal 2

Wind: -1.2m/s

Quarterfinals

28 July

Quarterfinal 1

Wind: -1.2m/s

Quarterfinal 2

Wind: +0.2m/s

Quarterfinal 3

Wind: -0.7m/s

Quarterfinal 4

Wind: -0.5m/s

Heats

28 July

Heat 1

Wind: -0.4m/s

Heat 2

Wind: +0.4m/s

Heat 3

Wind: -0.2m/s

Heat 4

Wind: -0.8m/s

Heat 5

Wind: +1.0m/s

Heat 6

Wind: -0.3m/s

Heat 7

Wind: -0.7m/s

Heat 8

Wind: -0.5m/s

Participation

According to an unofficial count, 57 athletes from 46 countries participated in the event.