Fastest swim long course 800 metres freestyle (female)
- Who
- Katie Ledecky
- What
- 8:04.12 minute(s):second(s)
- Where
- United States (Fort Lauderdale)
- When
- 03 May 2025
The fastest long course swim in 800 metres freestyle (female) is 8 minutes 4.12 seconds, achieved by Katie Ledecky (USA) at the TYR Pro Swim Series in Fort Lauderdale, Florida, USA, on 3 May 2025.
Ledecky broke her own world record from the 2016 Rio Olympics, which she had set when she was 19 years old. It was her first long course world record over any distance in almost seven years.