Fastest swim long course 100 metres backstroke (female)
- Who
- Regan Smith
- What
- 57.13 second(s)
- Where
- United States (Indianapolis)
- When
- 18 June 2024
The fastest swim long course 100 m backstroke (female) is 57.13 seconds, achieved by Regan Smith (USA) at the 2024 US Olympic Trials in Indianapolis, Indiana, USA, on 18 June 2024.
Regan Smith reclaimed the world record for the women’s 100 m backstroke at the US Olympic Trials.