Men’s 400m Individual Medley – Long Course World Record & Splits

Updated August 2026

Current Records

Record	Athlete	Time
World Record	Léon Marchand	4:02.50
Olympic Record	Léon Marchand	4:02.95
World Junior Record	Yumeki Kojima	4:08.84
Commonwealth Record	Lewis Clareburt	4:08.70

Top 10 All-Time Performers

#	Athlete	Fly	Back	Breast	Free	Time
1	Léon Marchand	54.66	1:01.98	1:07.64	58.22	4:02.50
2	Michael Phelps	54.92	1:01.57	1:10.56	56.79	4:03.84
3	Ryan Lochte	55.02	1:01.84	1:09.67	58.65	4:05.18
4	Chase Kalisz	55.93	1:03.65	1:07.67	58.65	4:05.90
5	Kosuke Hagino	55.57	1:02.16	1:10.23	58.09	4:06.05
6	Daiya Seto	54.22	1:03.46	1:09.83	58.58	4:06.09
7	László Cseh	55.07	1:02.36	1:10.85	57.88	4:06.16
8	Carson Foster	54.73	1:02.07	1:10.42	59.34	4:06.56
9	Tyler Clary	—	—	—	—	4:06.96
10	Tomoyuki Matsushita	—	—	—	—	4:07.21

Columns are 100m stroke totals (sum of each pair of 50s): fly · back · breast · free.
Clary and Matsushita splits not in source.

Split Analysis & Comparison

The table below compares elite 400m individual medley long-course performances.
Use it to review stroke splits, stroke counts, and race patterns. Data is collected from official results and race footage where available.

Related:
Men’s 200m IM Long Course

Men’s 400m IM – Long Course
	Leon Marchand	Michael Phelps	Ryan Lochte	Chase Kalisz	Kosuke Hagino	Laszlo Cseh	Carson Foster	Tyler Clary
Height:	6ft 2 in 187cm	6 ft 4 in 193cm	6 ft 2 in 188cm	6 ft 4 in 193cm	5 ft 10 in 177cm	6 ft 2 in 188cm		6 ft 1 in 185cm
Weight:	170lb 77kg	194Ib 88kg	195Ib 88kg	190Ib 86kg	157Ib 71kg	181Ib 82kg		185Ib 84kg
Country:	FRA	USA	USA	USA	JPN	HUN	USA	USA
DOB:	2002-05-17	1985-06-30	1984-08-03	1994-03-07	1994-08-15	1985-12-03	2001-10-26	1989-03-12
Meet:	World Aquatics Championships – Fukuoka 2023	Olympic Games Beijing 2008	Olympic Games London 2012	17th FINA World Championships 2017	Olympic Games Rio 2016	Olympic Games Beijing 2008	World Aquatics Championships – Fukuoka 2023	13th FINA World Championships 2009

1st 50m Split	25.77	25.73	25.62	26.22	25.44	25.60	25.66	25.87
Strokes	18	16	16	18		15	16
Split Time:	25.77	25.73	25.62	26.22	25.44	25.60	25.66	25.87
50m PB:	24.67	23.36	24.13	25.27	24.43	23.06	24.64	25.46
Time off 50m PB:	1.11	2.37	1.49	0.95	1.01	2.54	1.02	0.41
Percentage of 50m PB:	104.460%	110.146%	106.175%	103.759%	104.134%	111.015%	104.140%	101.610%

2nd 50m Split	28.89	29.19	29.40	29.71	30.13	29.47	29.07	29.71
Strokes	19	19	18	20		17	19
Split Time:	54.66	54.92	55.02	55.93	55.57	55.07	54.73	55.58

3rd 50m Split	31.40	31.37	31.17	32.25	31.16	31.42	31.55	31.68
Strokes	31	32	30	28		31	31
Split Time:	1:26.06	1:26.29	1:26.19	1:28.18	1:26.73	1:26.49	1:26.28	1:27.26

4th 50m Split	30.58	30.20	30.67	31.40	31.00	30.94	30.52	30.34
Strokes	31	34	30	29		30	31
Split Time:	1:56.64	1:56.49	1:56.86	1:59.58	1:57.73	1:57.43	1:56.80	1:57.60

5th 50m Split	33.87	34.77	34.18	33.58	34.96	35.04	34.76	36.35
Strokes	18	18	17	15		16	17
Split Time:	2:30.51	2:31.26	2:31.04	2:33.16	2:32.69	2:32.47	2:31.56	2:33.95

6th 50m Split	33.77	35.79	35.49	34.09	35.27	35.81	35.66	36.42
Strokes	18	19	16	16		17	18
Split Time:	3:04.28	3:07.05	3:06.53	3:07.25	3:07.96	3:08.28	3:07.22	3:10.37

7th 50m Split	29.83	28.94	29.55	29.61	29.70	29.40	30.26	29.39
Strokes	31	31	31	36		35	34?
Split Time:	3:34.11	3:35.99	3:36.08	3:36.86	3:37.66	3:37.68	3:37.48	3:39.76

8th 50m Split	28.39	27.85	29.10	29.04	28.39	28.48	29.08	27.55
Strokes	30	32	32	38		36	34?
Total Time:	4:02.50	4:03.84	4:05.18	4:05.90	4:06.05	4:06.16	4:06.56	4:07.31

Race Videos

Léon Marchand – 4:02.50 World Record

Michael Phelps – previous 400m IM World Record

Swim Calculators

Tool	What it does
Swim Pace Calculator	Pace, time, and distance (min/100m or min/100yds).
Goal Time / Split Calculator	Target splits for metres racing.
Yards Goal Calculator	Target splits for yards racing.
Race Review Calculator	Find strengths and weaknesses in a completed race.
Medley Relay Calculator	Build the fastest relay order from up to 6 swimmers’ PBs.