a 47.70 split in Erfurt 1984, a 47.9 split in the 1982 European Championship final, and a 47.9 split at the 1985 Canberra World Cup. Allyson Felix (USA) ran a 47.72 split in the 2015 Beijing World Championships final, a 48.01 split in the 2007 Osaka World Championships final, and a 48.20 split in the 2012 London Olympic final. Olga Nazarova and Olga Bryzgina (USSR) both ran a 47.80 split in the 1988 Seoul Olympic final; the Soviet team's final time of 3:15.17 is the current world record. Sydney McLaughlin ran a 47.91 split at the 2022 World Championships in Eugene. Florence Griffith-Joyner (USA) ran a 48.08 split in the 1988 Seoul Olympic final. Notes and references External links IAAF list of 4x400-metres-relay records in XML Track relay races Events in track and field Summer Olympic disciplines in athletics