World’s Fastest 400m Individual Medley – Men’s Short Course

World Record: Daiya Seto, Japan, 3:54.81, 20 December 2019, International Swimming League
World Junior Record: Chen Juner, China, 1:49.61 – 28 October 2022, Chinese Championships
Commonwealth Record: Thomas Fraser-Holmes, Australia, 3:57.91 – 28 November 2015, Australian Championships

Top 9 All-time Performers:

1. Daiya Seto (24.26, 28.09, 29.48, 29.57, 33.08, 33.42, 29.07, 27.84) 3:54.81
2. Ryan Lochte (25.57, 29.05, 29.89, 29.22, 33.55, 33.86, 27.69, 26.67) 3:55.50
3. Ilia Borodin 3:56.47
4. Alberto Razzetti 3:57.01
5. Laszio Cseh (24.70, 28.88, 30.01, 28.77, 34.03, 34.72, 28.88, 27.28) 3:57.27
6. Ous Mellouli (25.56, 29.29, 30.15, 29.75, 33.63, 34.12, 28.14, 26.76) 3:57.40
7. Tyler Clary (25.31, 29.12, 29.88, 28.68, 34.41, 34.28, 28.31, 27.57) 3:57.56
8. Carson Foster 3:57.63
9. Thomas Fraser-Holmes (25.21, 29.01, 30.18, 29.37, 33.57, 34.46, 28.59, 27.52) 3:57.91

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.

Men's 400m IM - Short Course
	Daiya Seto	Ryan Lochte	Laszio Cseh	Ous Mellouli	Tyler Clary	Thomas Fraser-Holmes
Height:	5 ft 9 in 174 cm	6 ft 2 in 188 cm	6 ft 2 in 188cm	6 ft 4 in 192cm	6 ft 1 in 185cm	6 ft 4 in 194cm
Weight:	165 Ib 75kg	195 Ib 88kg	181 Ib 82kg	185 Ib 84kg	185 Ib 84kg	187 Ib 85kg
Country:	JPN	USA	HUN	TUN	USA	AUS
DOB:	1994-05-24	1984-08-03	1985-12-03	1984-02-16	1989-03-12	1991-10-09
Meet:	ISL 2019 Season - Grand Final	10th FINA World Swimming Championships (25m) 2010	European Short Course Swimming Championships 2009	10th FINA World Swimming Championships (25m) 2010	10th FINA World Swimming Championships (25m) 2010	2015 Hancock Prospecting Australian Championships
1st 25m Strokes	6	5		6	6
2nd 25m Strokes:	6	7		8	8
50m Split Time:	24.26	25.57	24.7	25.56	25.31	25.21
50m PB:	23.57	22.94	22.88	24.25	24.84	24.45
Time off 50m PB:	0.69	2.63	1.82	1.31	0.47	0.76
Percentage of 50m PB:	102.927%	111.465%	107.954%	105.402%	101.892%	103.108%
3rd 25m Strokes:	7	8		8	8
2nd 50m Split:	28.09	29.05	28.88	29.29	29.12	29.01
4th 25m Strokes	7	8		8	8
Split Time:	52.35	54.62	53.58	54.85	54.43	54.22
5th 25m Strokes:		11		11	13
3rd 50m Split	29.48	29.89	30.01	30.15	29.88	30.18
6th 25m Strokes:		11		11	13
Split Time:	1:21.83	1:24.51	1:23.59	1:25.00	1:24.31	1:24.40
7th 25m Strokes:	12	11
4th 50m Split	29.57	29.22	28.77	29.75	28.68	29.37
8th 25m Strokes	13	12			14
Split Time:	1:51.40	1:53.73	1:52.36	1:54.75	1:52.99	1.:53.77
9th 25m Strokes:	7	7		6	7
5th 50m Split	33.08	33.55	34.03	33.63	34.41	33.57
10th 25m Strokes:	6	6		7	8
Split Time:	2:24.48	2:27.28	2:26.39	2:28.38	2:27.40	2:27.34
11th 25m Strokes:	6	7		7	8
6th 50m Split	33.42	33.86	34.72	34.12	34.28	34.46
12th 25m Strokes:	6	7			8
Split Time:	2:57.90	3:01.14	3:01.11	3:02.50	3:01.68	3:01.80
13th 25m Strokes:	15	13			16
7th 50m Split	29.07	27.69	28.88	28.14	28.31	28.59
14th 25m Strokes:	14	13		14	14
Split Time:	3:26.97	3:28.83	3:29.99	3:30.64	3:29.99	3:30.39
15th 25m Strokes:	15	12		15	15
8th 50m Split	27.84	26.67	27.28	26.76	27.57	27.52
16th 25m Strokes	17	11		15	16
Split Time:	3:54.81	3:55.50	3:57.27	3:57.40	3:57.56	3:57.91
Total Time:	3:54.81	3:55.50	3:57.27	3:57.40	3:57.56	3:57.91

Here is Daiya Seto 400m Individual Medley World Record swim to view.

Here is the list of the Men’s 200m IM Short Course.

Statistical Insights:

• Time Differences:
  • The top 9 all-time performers are separated by just 3.10 seconds. This narrow range underscores the competitiveness of the event and the elite standards required to be among the fastest.
• Average Time of Top 9 Performers:
  • The average time of the top 9 swimmers is approximately 3:56.61, highlighting the benchmark for elite performance in this event.

Note: World’s Fastest 400m Individual Medley – Men’s Short Course Update April 2023