The women'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]
The women'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.
| World Junior Record |  United States Blue(Bianca Knight, Jeneba Tarmoh, Elizabeth Olear, Gabrielle Mayo) | 43.29 | Eugene, OR, United States | 8 August 2006 |
| Championship Record |  Jamaica (Sherone Simpson, Kerron Stewart, Anneisha McLaughlin, Simone Facey) | 43.40 | Kingston, Jamaica | 21 July 2002 |
| World Junior Leading | United States Young Achievers A (Keana Gray, Tristie Johnson, Shayla Sanders, Kali Davis-White) | 44.39 | Orlando, FL, United States | 26 May 2012 |
| Broken records during the 2012 World Junior Championships in Athletics | ||||
|---|---|---|---|---|
| World Junior Leading | United States (Morgan Snow, Dezerea Bryant, Jennifer Madu, Shayla Sanders) | 43.89 | Barcelona, Spain | 14 July 2012 |
Qualification: First 2 of each heat (Q) plus the 2 fastest times (q) qualified
| Rank | Lane | Nation | Athletes | Time | Notes |
|---|---|---|---|---|---|
 | 9 | United States | Morgan Snow, Dezerea Bryant, Jennifer Madu, Shayla Sanders | 43.89 | WJL |
 | 6 |  Germany | Alexandra Burghardt, Ida Mayer, Katharina Grompe, Jessie Maduka | 44.24 | SB |
 | 3 |  Brazil | Camila de Souza, Tamiris de Liz, Nathalia da Rosa, Jéssica Carolina dos Reis | 44.29 | SB |
| 4 | 1 |  Poland | Zuzanna Kalinowska, Katarzyna Sokólska, Angelika Stępień, Kamila Ciba | 44.95 | SB |
| 5 | 2 |  Belgium | Orphée Depuydt, Camille Laus, Imke Vervaet, Justien Grillet | 45.12 | |
| 6 | 7 |  Netherlands | Miquella Lobo, Tessa van Schagen, Naomi Sedney, Marloes Duijn | 45.22 | |
| 8 |  Great Britain | Dina Asher-Smith, Rachel Johncock, Desiree Henry, Sophie Papps | DNF | ||
| 5 |  Nigeria | Josephine Ada Omaka, Wisdom Isoken, Goodness Thomas, Stephanie Kalu | DQ |
According to an unofficial count, 72 athletes from 17 countries participated in the event.
Australia (4)
Bahamas (4) Belgium (4) Brazil (5)
Canada (4) Germany (4)
Italy (4) Jamaica (4) Netherlands (4) Nigeria (4) Poland (4)
Slovenia (4)
South Africa (4)
Spain (4)
Switzerland (4) United Kingdom (6) United States (5)The women's 800 metres at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 10, 11, and 12 July.
The women's 400 metres at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 11, 12, and 13 July.
The women's 200 metres at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 12 and 13 July.
The women's 100 metres at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 10 and 11 July.
The women's 1500 metres at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 13 and 15 July.
The men's hammer throw at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13 and 14 July.
The men's 110 metres hurdles at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 10–12 July.
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.
The men's 4 × 400 metres relay at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 14 and 15 July.
The men's 3000 metres steeplechase at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13 and 15 July.
The women's 5000 metres at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 11 July.
The women's 100 metres hurdles at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13, 14, and 15 July.
The women's 400 metres hurdles at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 12, 13, and 14 July.
The women's 3000 metres steeplechase at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 10 and 12 July.
The women's 4 × 400 metres relay at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 14 and 15 July 2012.
The women's 10000 metres walk at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 11 July.
The women's long jump at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 12 and 13 July. The event was won by British heptathlon specialist Katarina Johnson-Thompson.
The women's triple jump at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 12 and 13 July.
The women's high jump at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 13 and 15 July.
The women's shot put at the 2012 World Junior Championships in Athletics will be held at the Estadi Olímpic Lluís Companys on 10 July.
