World’s Fastest 400m IM – Women’s Short Course

World Record: Mireia Belmonte, Spain, 4:18.94 – 12 August 2017, World Cup
World Junior Record: Summer McIntosh, Canada, 4:21.49 – 29 October 2022, World Cup
Commonwealth Record: Summer McIntosh, Canada, 4:21.49 – 29 October 2022, World Cup

Top 8 All-time Performers:

  1. Mireia Belmonte (27.99, 31.39, 33.99, 33.09, 35.81, 36.97, 30.39, 29.31) 4:18.94
  2. Katinka Hosszu (27.63, 31.56, 32.82, 32.31, 37.56, 37.87, 30.31, 29.40) 4:19.46
  3. Julia Smit 4:21.04 (28.39, 32.21, 33.33, 32.08, 36.65, 36.76, 31.16, 30.46) 4:21.04
  4. Summer McIntosh (27.98, 31.73, 33.26, 32.30, 37.62, 38.94, 30.73, 28.93) 4:21.49
  5. Yui Ohashi (28.19, 32.05, 33.41, 32.26, 37.72, 38.26, 30.92, 29.92) 4:22.73
  6. Kathryn Meaklim (28.84, 32.84, 35.05, 33.84, 36.05, 36.13, 30.73, 29.40) 4:22.88
  7. Hannah Miley (29.48, 33.12, 33.54, 33.34, 36.58, 37.20, 30.83, 29.11) 4:23.14
  8. Ye Shiwen (29.49, 33.72, 33.89, 33.45, 37.43, 37.32, 29.89, 28.14) 4:23.33

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The chart below compares the World’s Fastest 400m IM – Women’s Short 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. Here is Mireia Belmonte’s 400m IM World Record swim to view.

Here is a list of the Women’s 400IM Long Course.

Women's 400m IM - Short Course
Mireia BelmonteKatinka HosszuSummer McIntoshYui OhashiKathryn MeaklimHannah MileyYe Shiwen
Height:5 ft 7 in 170cm5 ft 9 in 175cm5 ft 8 in 173cm5 ft 8 in 173cm5 ft 9 in 180cm5 ft 5 in 166cm5 ft 8 in 172cm
Weight:132 Ib 60kg150 Ib 68kg125 Ib 57kg 158 Ib 72kg117 Ib 53kg141 Ib 64kg
Country:ESPHUNCANJPNRSAGBRCHN
DOB:1990-11-10 1989-05-03 2006-08-181995-10-18 1989-07-20 1989-08-08 1996-03-01
Meet:2017 World Cup - Eindhoven 2015 Euro's Champs scmFINA Swimming World Cup 20222018 World Cup - TokyoFINA/ARENA Swimming World Cup 20092012 SCM World Cup2012 SCM World Cup
1st 25m Strokes7
2nd 25m Strokes9
Split Time:27.9927.6327.9828.1928.8429.4829.49
50m PB:27.7525.6426.5928.5128.1327.54
Time off 50m PB:0.241.991.600.331.351.95
Percentage of 50m PB:100.865%107.761%106.017%101.157%104.799%107.081%
3rd 25m Strokes10
2nd 50m Split31.3931.5631.7332.0532.8433.1233.72
4th 25m Strokes10
Split Time:59.3859.1959.711:00.241:01.681:02.601:03.21
5th 25m Strokes
3rd 50m Split33.9932.8233.2633.4135.0533.5433.89
6th 25m Strokes
Split Time:1:33.371:32.011:32.971:33.651:36.731:36.141:37.10
7th 25m Strokes17
4th 50m Split33.0932.3132.3032.2633.8433.3433.45
8th 25m Strokes
Split Time:2:06.462:04.322:05.272:05.912:10.572:09.482:10.55
9th 25m Strokes
5th 50m Split35.8137.5637.6237.7236.0536.5837.43
10th 25m Strokes
Split Time:2:42.272:41.882:42.892:43.632:46.622:46.062:47.98
11th 25m Strokes10
6th 50m Split36.9737.8738.9438.2636.1337.2037.32
12th 25m Strokes10
Split Time:3:19.243:19.753:21.833:21.893:22.753:23.263:25.30
13th 25m Strokes18
7th 50m Split30.3930.3130.7330.9230.7330.8329.89
14th 25m Strokes18
Split Time:3:49.633:50.063:52.563:52.813:53.483:54.033:55.19
15th 25m Strokes18
8th 50m Split29.3129.4028.9329.9229.4029.1128.14
Strokes18
Total Time:4:18.944:19.464:21.494:22.734:22.884:23.144:23.33

Note: World’s Fastest 400m IM – Women’s Short Course Update April 2023

Additionally, here are our Top 5 Swim Calculators from our web traffic:

  1. 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
  2. Swim Split Calculator/Goal Time Calculator – Breaks the swim down to the individual target splits for Meters racing
  3. Yards Goal Calculator – Breaks the swim down to the individual target splits for Yards racing
  4. Race Review Calculator – Allows the coach, swimmer or parent to identify the strengths and weaknesses of a race that has been swum.
  5. 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.
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