World’s Fastest 400m Individual Medley – Women’s Long Course

World Record: Summer McIntosh 4:24.38
Olympic Record: Katinka Hosszu 4:26.36
World Junior Record: Summer McIntosh 4:25.87
Commonwealth Record: Summer McIntosh 4:24.38

Top 10 All-time Performers:

1. Summer McIntosh (27.55, 31.63, 34.13, 32.99, 37.92, 39.21, 31.23, 29.72) 4:24.38
2. Katinka Hosszu (28.33, 32.58, 34.10, 33.38, 37.23, 38.88, 31.18, 30.68) 4:26.36
3. Kaylee McKeown (28.57, 33.11, 35.13, 33.18, 39.10, 37.07, 21.89, 30.17) 4:28.22
4. Shiwen Ye (28.85, 33.34, 35.34, 34.20, 38.80, 39.22, 29.75, 28.93) 4:28.43
5. Stephanie Rice (28.66, 32.81, 34.70, 33.66, 38.29, 39.13, 31.67, 30.53) 4:29.45
6. Kristy Coventry (29.50, 33.25, 33.57, 33.18, 38.74, 40.22, 31.33, 30.10) 4:29.89
7. Yui Ohashi 4:30.82
8. Yui Ohashi (28.41, 32.85, 35.04, 34.38, 38.83, 38.91, 32.11, 30.70) 4:30.82
9. Hui Qi 4:30.85
10. Katie Hoff (30.10, 33.59, 35.47, 34.17, 37.45, 37.87, 31.01, 31.46) 4:31.12

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The chart below compares the World’s fastest 400m Individual Medley 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 IM - Long Course
	Summer McIntosh	Katinka Hosszu	Kaylee McKeown	Shiwen Ye	Stephanie Rice	Kirsty Coventry	Yui Ohashi	Katie Hoff
Height:	5 ft 8 in 173cm	5 ft 9 in 175cm	5 ft 9 in 175cm	5 ft 8 in 172cm	5 ft 9 in 176cm	5 ft 9 in 176cm	5 ft 8 in 173cm	5 ft 9 in 175cm
Weight:		150 Ib 68kg	132 Ib 60kg	141 Ib 64kg	148 Ib 67kg	141Ib 64kg	125 Ib 57kg	141 Ib 64kg
Country:	CAN	HUN	AUS	CHN	AUS	ZIM	JPN	USA
DOB:	2006-08-18	1989-05-03	2001-07-11	1996-03-01	1988-06-17	1983-09-16	1995-10-18	1989-06-03
Meet:	Canadian Olympic Trials 2024	Olympic Games Rio 2016	2024 Australian Open Championships	Olympic Games London 2012	Olympic Games Beijing 2008	Olympic Games Beijing 2008	Japan Swim 2018	USA Olympic Trails 2008
1st 50m Split	27.55	28.33	28.57	28.85	28.66	29.50	28.41	30.10
Strokes	20	20		20				23
Split Time:	27.55	28.33	28.57	28.85	28.66	29.50	28.41	30.10
50m PB:	27.26	26.62	27.84	27.54	28.54	27.95	26.59	28.52
Time off 50m PB:	0.31	1.71	0.73	1.31	0.12	1.55	1.82	1.58
Percentage of 50m PB:	101.064%	106.424%	102.622%	104.757%	100.420%	105.546%	106.844%	105.540%
2nd 50m Split	31.63	32.58	33.11	33.34	32.81	33.25	32.85	33.59
Strokes	23	23		23				25
Split Time:	59.18	1:00.91	1:01.68	1:02.19	1:01.47	1:02.75	1:00.76	1:03.69
3rd 50m Split	34.13	34.10	35.13	35.34	34.70	33.57	35.04	35.47
Strokes	38	42		41				37
Split Time:	1:33.31	1:35.01	1:36.81	1:37.53	1:36.17	1:36.32	1:35.80	1:39.16
4th 50m Split	32.99	33.38	33.18	34.20	33.66	33.18	34.38	34.17
Strokes	37	43		37				37
Split Time:	2:06.30	2:08.29	2:09.99	2:11.73	2:09.83	2:09.50	2:10.18	2:13.33
5th 50m Split	37.92	37.23	39.10	38.80	38.29	38.74	38.83	37.45
Strokes	22	23		20				26
Split Time:	2:44.22	2:45.62	2:49.09	2:50.53	2:48.12	2:48.24	2:49.10	2:50.78
6th 50m Split	39.21	38.88	39.10	39.22	39.13	40.22	38.91	37.87
Strokes	22	23		21				26
Split Time:	3:23.43	3:24.50	3:26.16	3:29.75	3:27.25	3:28.46	3:28.01	3:28.65
7th 50m Split	31.23	31.18	31.89	29.75	31.67	31.33	32.11	31.01
Strokes	39	39		42				42
Split Time:	3:54.66	3:55.68	3:58.05	3:59.50	3:58.92	3:59.79	4:00.12	3:59.66
8th 50m Split	29.72	30.68	30.17	28.93	30.53	30.10	30.70	31.46
Strokes	41	41		43				43
Total Time:	4:24.38	4:26.36	4:28.22	4:28.43	4:29.45	4:29.89	4:30.82	4:31.12

Here is Summer McIntosh’s 400m Individual Medley World Record swim to view.

Here is a list of the Women’s 200IM Long Course.

Analyzing the performances of the world’s fastest swimmers in the Women’s 400m Individual Medley (IM) for Long Course (LC) based on time differences provides valuable insights into the intricacies of this challenging multi-stroke event. The 400m IM demands excellence in four distinct swimming styles and requires both physical endurance and tactical prowess. Here’s an in-depth examination of the top swimmers and the time differences that separate them:

1. Summer McIntosh (4:24.38):
   • Summer McIntosh’s remarkable time of 4:24.38 places her at the pinnacle of the 400m IM rankings. Her performance demonstrates exceptional versatility across all four strokes—butterfly, backstroke, breaststroke, and freestyle. McIntosh’s lead of 1.98 seconds over her closest competitor underlines her dominance in this event.
2. Katinka Hosszu (4:26.36):
   • Katinka Hosszu, trailing McIntosh by 0.49 seconds, showcases her world-class capabilities in the 400m IM. Hosszu’s ability to excel in various strokes and maintain a relentless pace positions her as a formidable contender.
3. Kaylee McKeown (4:28.22)
4. Shiwen Ye (4:28.43):
   • Shiwen Ye’s time of 4:28.43, 1.57 seconds behind Hosszu, highlights her strengths in individual strokes. Ye’s impressive performance showcases her prowess in balancing speed and efficiency.
5. Stephanie Rice (4:29.45):
   • Stephanie Rice’s time of 4:29.45, 1.02 seconds behind Ye, reflects her technical excellence and strategic approach to the 400m IM. Her swim emphasizes precision and control in each stroke.
6. Kristy Coventry (4:29.89):
   • Kristy Coventry’s performance, just 0.44 seconds behind Rice, underscores her competitiveness in the 400m IM. Coventry’s experience and ability to execute the strokes effectively contribute to her strong showing.
7. Yui Ohashi (4:30.82):
   • Yui Ohashi, with a time of 4:30.82, positions herself as a determined contender, 0.93 seconds behind Coventry. Her consistency across the four strokes and tactical approach make her a noteworthy presence.
8. Katie Hoff (4:31.12):
   • Katie Hoff concludes the list with a time of 4:31.12, trailing Ohashi by 0.30 seconds. Hoff’s disciplined pacing and technical proficiency make her a consistent performer in this demanding event.

In summary, the Women’s 400m Individual Medley in Long Course is a showcase of versatility and endurance. Summer McIntosh’s lead underscores her exceptional talent, but the small time differences among the top swimmers highlight the intense competition in this event. Each athlete brings their unique strengths and expertise to the pool, making the 400m IM a captivating and physically demanding race. It’s a test of not only physical prowess but also strategic acumen, as swimmers aim to maximize their strengths and minimize their weaknesses across all four strokes.

Note: World’s Fastest 400m Individual Medley – Women’s Long Course Update July 2024