World’s Fastest 400m Freestyle – Women’s Long Course
World Record: Summer McIntosh 3:54.18 (NEW)
Olympic Record: Katie Ledecky 3:56.46
World Junior Record: Summer McIntosh 3:56.46
Commonwealth Record: Summer McIntosh 3:54.18
Top 10 All-time Performers:
- Summer McIntosh (27.22, 29.73, 29.61, 29.86, 29.62, 29.61, 29.47, 29.06) 3:54.18
- Ariarne Titmus (27.56, 29.36, 30.00, 30.02, 30.19, 29.77, 29.61, 28.87) 3:55.38
- Katie Ledecky (27.73, 29.32, 29.94, 30.12, 30.30, 30.21, 29.92, 28.92) 3:56.46
- Federica Pellegrini (28.45, 30.21, 30.31, 30.45, 30.24, 30.27, 29.86, 29.36) 3:59.15
- Erika Fairweather (27.70, 29.84, 30.36, 30.51, 30.42, 30.49, 30.54, 29.58) 3:59.44
- Lani Pallister (27.31, 29.58, 29.90, 30.54, 30.38, 30.79, 30.89, 30.33) 3:59.72
- Li Bingjie (28.11, 30.30, 30.53, 30.56, 30.46, 30.54, 29.84, 29.65) 3:59.99
- Claire Weinstein (27.91, 29.80, 30.16, 30.48, 30.50, 30.54, 30.69, 29.97) 4:00.05
- Joanne Jackson (28.43, 30.34, 30.44, 30.70, 30.31, 30.62, 30.16, 29.60) 4:00.60
- Leah Smith (27.97, 29.73, 30.06, 30.40, 30.74, 30.61, 30.84, 30.30) 4:00.65
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The chart below compares the World’s Fastest 400m Freestyle – Women’s Long Course swimmers. Swimmers and coaches can looks at the individual Splits, Stroke Counts and the first 50m split compared to swimmers 50m PB. All swim data has been collected from our team reviewing race footage where possible.
| Women's 400 Freestyle - Long Course | ||||||||
|---|---|---|---|---|---|---|---|---|
| Summer McIntosh | Ariane Titmus | Katie Ledecky | Federica Pellegrini | Erika Fairweather | Joanne Jackson | Leah Smith | Rebecca Adlington | |
| Height: | 5 ft 8 in 173cm | 5 ft 10 in 177cm | 6 ft 0 in 183cm | 5 ft 10 in 179cm | 5 ft 8 in 173cm | 6 ft 0 in 184cm | 5 ft 10 in 178cm | 5 ft 10 in 179cm |
| Weight: | 139Ib 63kg | 160Ib 73kg | 143Ib 65kg | 168Ib 76kg | 148Ib 67kg | 154Ib 70kg | ||
| DOB: | 2006-08-18 | 2000-09-07 | 1997-03-17 | 1988-08-05 | 2003-12-31 | 1986-09-12 | 1995-04-19 | 1989-02-17 |
| Country: | CAN | AUS | USA | ITA | NZ | GBR | USA | GBR |
| Meet: | 2025 Bell Canadian Swimming Trials | World Aquatic Championships - Fukuoka 2023 23 Jul 2023 | Olympic Games Rio 2016 | 13th FINA World Championships 2009 | World Aquatic Championships - Fukuoka 2023 23 Jul 2023 | 13th FINA World Championships 2009 | U.S. Olympic Team Trials 2016 | 13th FINA World Championships 2009 |
| 1st 50m Split | 27.56 | 27.73 | 28.45 | 27.70 | 28.43 | 27.97 | 28.63 | |
| Strokes | 35 | 37 | 38 | 36 | 39 | |||
| 50m PB: | 26.13 | 25.45 | 24.92 | 26.14 | 27.52 | 27.85 | ||
| Time off 50m PB: | 0.95 | 1.55 | 2.28 | 3.53 | 1.56 | 0.91 | 0.78 | |
| Percentage of 50m PB: | 105.932% | 108.959% | 114.165% | 105.968% | 103.307% | 102.801% | ||
| 2nd 50m Split | 29.36 | 29.32 | 30.21 | 29.83 | 30.34 | 29.73 | 30.42 | |
| Strokes | 38 | 40 | 39 | 38 | 43 | |||
| Split Time: | 56.92 | 57.05 | 58.66 | 57.53 | 58.77 | 57.70 | 59.05 | |
| 3rd 50m Split | 30.00 | 29.94 | 30.31 | 30.29 | 30.44 | 30.06 | 30.53 | |
| Strokes | 38? | 41 | 41 | 38 | 44 | |||
| Split Time: | 1:26.92 | 1:26.99 | 1:28.97 | 1:27.82 | 1:29.21 | 1:27.76 | 1:29.58 | |
| 4th 50m Split | 30.02 | 30.12 | 30.45 | 30.39 | 30.70 | 30.40 | 30.48 | |
| Strokes | 38 | 40 | 40 | 39 | ||||
| Split Time: | 1:56.94 | 1:57.11 | 1:59.42 | 1:58.21 | 1:59.91 | 1:58.16 | 2:00.06 | |
| 5th 50m Split | 30.19 | 30.30 | 30.24 | 30.65 | 30.31 | 30.74 | 30.74 | |
| Strokes | 38? | 40 | 40 | 39 | ||||
| Split Time: | 2:27.13 | 2:27.41 | 2:29.66 | 2:28.86 | 2:30.22 | 2:28.90 | 2:30.80 | |
| 6th 50m Split | 29.77 | 30.21 | 30.27 | 30.93 | 30.62 | 30.61 | 30.47 | |
| Strokes | 38 | 40 | 40 | 39 | 45 | |||
| Split Time: | 2:56.90 | 2:57.54 | 2:59.93 | 2:59.59 | 3:00.84 | 2:59.51 | 3:01.27 | |
| 7th 50m Split | 29.61 | 29.92 | 29.86 | 30.71 | 30.16 | 30.84 | 30.39 | |
| Strokes | 39 | 40 | 41 | 39 | 46 | |||
| Split Time: | 3:26.51 | 3:27.54 | 3:29.79 | 3:30.50 | 3:31.00 | 3:30.35 | 3:31.66 | |
| 8th 50m Split | 28.87 | 28.92 | 29.36 | 29.09 | 29.60 | 30.30 | 29.13 | |
| Strokes | 42 | 40 | 42 | 41 | ||||
| Total Time: | 3:54.18 | 3:55.38 | 3:56.46 | 3:59.15 | 3:59.59 | 4:00.60 | 4:00.65 | 4:00.79 |
Here is Summer’s 400m Freestyle former World Record swim to view.
Here is Ariarne’s 400m Freestyle former World Record swim to view.
Note: World’s Fastest 400m Freestyle – Women’s Long Course Update June 2025
Additionally, here are our Top 5 Swim Calculators from our web traffic:
- Swim Pace Calculator – Help you determine your pace, time, and distance based on your goals and performances. Optional settings for MIN/100YDS and MIN/100M
- Swim Split Calculator/Goal Time Calculator – Breaks the swim down to the individual target splits for Meters racing
- Yards Goal Calculator – Breaks the swim down to the individual target splits for Yards racing
- Race Review Calculator – Allows the coach, swimmer or parent to identify the strengths and weaknesses of a race that has been swum.
- Medley Relay Calculator – This Calculator allows coaches to quickly compose the fastest relay team available to them. Enter up to 6 swimmers, enter their personal bests for each event and then hit calculate. The Medley Relay Calculator will then provide you with the fastest relay combination available to you.