The men's 4 × 100 metres relay at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13 and 14 July.[1][2][3]
Prior to the competition[update], the existing world junior and championship records were as follows.
Qualification: First 2 of each heat (Q) plus the 2 fastest times (q) qualified
According to an unofficial count, 93 athletes from 22 countries participated in the event.
Lokasi Pengunjung: 18.119.127.92