4 × 100 m freestyle relay, women

What to remember

Fukuoka, July 23, 2023, at the World Championships: the Australian relay covered the 4 × 100 m freestyle in 3 min 27.96 s. Mollie O'Callaghan led off in 52.08 s, Shayna Jack followed in 51.69 s, Meg Harris in 52.29 s, and Emma McKeon closed in 51.90 s.

Those championships were Mollie O'Callaghan's: in 2023 she won the individual 200 m freestyle title and was part of the Australian relays that took gold in the 4 × 100 m and 4 × 200 m.

The women's 4 × 100 m freestyle has been on the Olympic program since the 1912 Games, long before the men's event, and it has been swum at the World Championships since the first edition in 1973. This time was set in a long course pool, the 50 m version recognized by World Aquatics.