| Final | time | __________ | | 1. United States |  USA | 41.58s | | | Alice Brown, Diane Williams, Florence Griffith-Joyner, Pam Marshall | | 2. East Germany | USA | 41.95s | | | Silke Gladisch-Moller, Cornelia Riefstahl-Oschkenat, Kerstin Behrendt, Marlies Oelsner-Gohr | | 3. Soviet Union | USA | 42.33s | | | Irina Slyusar, Natalya Pomoshchnikova-Voronova, Natalya German, Olga Antonova | | 4. Bulgaria | USA | 42.71s | | | Ginka Zagorcheva, Anelia Nuneva, | Nadezhda Georgieva, Valya Demireva | | 5. West Germany | USA | 43.20s | | | Silke-Beate Knoll, Ulrike Sarvari, Andrea Thomas, Ute Thimm | | 6. Canada | USA | 43.26s | | | Angela Bailey, Angela Phipps, Angella Taylor-Issajenko, Keturah Anderson | | 7. Cuba | USA | 43.66s | | | Eusebia Riquelme, Aliuska Lopez, Susana Armenteros, Liliana Allen | | 8. France | USA | 43.75s | | | Francoise Leroux, Marie-Christine Cazier-Ballo, Laurence Bily, Muriel Leroy |
| Heat 1 | time | Rk. | __________ | | 1. East Germany |  GDR | 42.96s | 3. | | | Silke Gladisch-Moller, Cornelia Riefstahl-Oschkenat, Kerstin Behrendt, Marlies Oelsner-Gohr | | 2. Canada |  CAN | 43.30s | 4. | | | Angela Bailey, Angela Phipps, Angella Taylor-Issajenko, Keturah Anderson | | 3. West Germany |  FRG | 43.32s | 5. | | | Silke-Beate Knoll, Ulrike Sarvari, Andrea Thomas, Ute Thimm | | 4. Bulgaria |  BUL | 43.50s | 6. | | | Ginka Zagorcheva, Anelia Nuneva, Nadezhda Georgieva, Valya Demireva | | 5. Nigeria |  NGR | 43.95s | 9. | | | Beatrice Utondu, Tina Iheagwam, Mary Onyali, Falilat Ogunkoya | | 6. Ghana |  GHA | 44.28s | 11. | | | Mercy Addy, Diana Yankey, Cynthia Quartey, Martha Appiah | | -. Brazil |  BRA | DNS | | | | Ines Ribeiro, Claudilea Dos Santos, Sheila De Oliveira, Cleide Amaral |
| Heat 2 | time | Rk. | __________ | | 1. United States | USA | 41.96s | 1. | | | Alice Brown, Diane Williams, Florence Griffith-Joyner, Pam Marshall | | 2. Soviet Union |  URS | 42.47s | 2. | | | Irina Slyusar, Natalya Pomoshchnikova-Voronova, Natalya German, Olga Antonova | | 3. Cuba |  CUB | 43.53s | 7. | | | Eusebia Riquelme, Aliuska Lopez, Susana Armenteros, Liliana Allen | | 4. France |  FRA | 43.59s | 8. | | | Francoise Leroux, Marie-Christine Cazier-Ballo, Laurence Bily, Muriel Leroy | | 5. Great Britain |  GBR | 44.21s | 10. | | | Baptiste Cohen Eleanor, Hoyte Joan, Dunn-Thomas Wendy | | 6. Italy |  ITA | 44.49s | 13. | | | Rita Angotzi, Patrizia Lombardo, Annarita Balzani, Marisa Masullo | | 7. India |  IND | 46.32s | 14. | | | Ashwini Nachappa, Vandana Shanbag, Sany Joseph, Vandana Rao |
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