The Boys' 100 metres at the 2009 World Youth Championships in Athletics was held at the Brixen-Bressanone Sport Arena on 8 and 9 July. The event was won by Prezel Hardy of the United States.

Medalists

Records

Prior to the competition, the following records were as follows.

2009 World Youth Championships in Athletics – Boys' 100 metres

No new records were set during the competition.

2009 World Youth Championships in Athletics – Boys' 100 metres

Heats

Qualification rule: first 2 of each heat (Q) plus the 4 fastest times (q) qualified.

2009 World Youth Championships in Athletics – Boys' 100 metres

Semifinals

Qualification rule: first 4 of each heat (Q) qualified.

Heat 1

Key: PB = Personal best, SB = Seasonal best

Wind: 1.1 m/s

Heat 2

Key: PB = Personal best, SB = Seasonal best

Wind: 1.3 m/s

Final

Key: PB = Personal best, SB = Seasonal best

Wind: −1.2 m/s

References

World Youth Championships 2009

2009 World Youth Championships in Athletics

100 metres at the IAAF World Youth Championships in Athletics