World’s Fastest 400m Freestyle – Men’s Long Course

World Record: Lukas Martens 3:39.96
Olympic Record: Sun Yang 3:40.14
World Junior Record: Petar Petrov Mitsin 3:44.31
Commonwealth Record: Ian Thorpe 3:40.08

Top 9 All-time Performers:

1. Lukas Martens (24.75, 27.15, 27.75, 27.90, 28.28, 28.18, 28.38 27.57) 3:39.96
2. Paul Biedermann (26.69, 28.13, 28.01, 28.59, 27.76, 28.39, 27.13, 25.77) 3:40.07
3. Ian Thorpe (25.33, 27.69, 28.25, 28.30, 27.81, 28.05, 27.61, 27.04) 3:40.08
4. Sun Yang (25.83, 27.76, 28.34, 28.59, 27.98,  28.14, 27.10, 26.40) 3:40.14
5. Samuel Short (25.91,27.67, 27.75, 27.96, 28.17, 28.03, 28.18, 27.01) 3:40.68
6. Ahmed Hafnaoui (26.07, 27.75, 27.89, 27.79, 28.03, 28.10, 27.97, 27.10) 3:40.70 
7. Ous Mellouli (25.95, 27.91, 28.15, 28.43, 27.76, 28.09, 27.66, 27.16) 3:41.11
8. Elijah Winnington (25.30, 27.66, 28.26, 28.75, 28.69, 28.23, 27.83, 26.50) 3:41.22
9. Zhang Lin (26.30, 27.67, 28.43, 28.31, 28.41, 28.03, 27.72, 26.48) 3:41.35
10. Tae-Hwan Park 3:41.53

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The chart below compares the World’s fastest 400m Freestyle 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 Freestyle - Long Course
	Lukas Martens	Paul Biedermann	Ian Thorpe	Sun Yang	Samuel Short	Ahmed Hafnaoui	Ous Mellouli	Elijah Winnington	Zhang Lin	Park Taehwan
Height:	6 ft 4 in 192cm	6 ft 4 in 193cm	6 ft 5 in 196cm	6 ft 7 in 200cm		6 ft 4 in 195cm	6 ft 4 in 192cm	6 ft 1 in 186cm	6 ft 2 in 188cm	6 ft 0 in 183cm
Weight:	165Ib 75kg	205Ib 93kg	229Ib 104kg	196Ib 89kg		185lb 84kg	185Ib 84kg	172lb 78kg	170Ib 77kg	168Ib 76kg
Country:	GER	GER	AUS	CHN	AUS	TUN	TUN	AUS	CHN	KOR
DOB:	2001-12-27	1986-08-07	1982-10-13	1991-12-01	2003-09-17	2002-12-04	1984-02-19	2000-05-05	1987-01-06	1989-09-27
Meet:	2025 Swim Open Stockholm	13th FINA World Championships 2009	17th Commonwealth Games 2002	Olympic Games London 2012	World Aquatics Championships - Fukuoka 2023	World Aquatics Championships - Fukuoka 2023	13th FINA World Championships 2009	19th FINA World Championships Budapest 2022	13th FINA World Championships 2009	16th Asian Games 2010
1st 50m Split	24.75	26.69	25.33	25.83	25.91	26.07	25.95	25.30	26.30	25.87
Strokes	30	27	27		31	29		29	30
Split Time:	24.75	26.69	25.33	25.83	25.91	26.07	25.95	25.30	26.30	25.87
50m PB:	23.65	22.98	23.57	24.68	25.05	25.89	23.03	22.79	25.20
Time off 50m PB:	1.10	3.71	1.76	1.15	0.86	0.18	2.92	2.51	1.10
Percentage of 50m PB:	104.651%	116.145%	107.467%	104.659%	103.433%	100.695%	112.679%	111.014%	104.365%
2nd 50m Split	27.15	28.13	27.69	27.76	27.67	27.75	27.91	27.66	27.67	27.93
Strokes	34	29	28		37	32	31	33	32	31
Split Time:	51.90	54.42	53.02	53.59	53.58	53.82	53.86	52.96	53.97	53.80
100m PB:	48.86	48.31	48.56	49.27	52.54	53.82	49.55	49.34	52.24	48.42
Time off 100m PB:	3.04	6.11	4.46	4.32	1.04	0.00	4.31	3.62	1.73	5.38
Percentage of 100m PB	106.223%	112.648%	109.185%	108.768%	101.979%	100.000%	108.698%	107.337%	103.312%	111.111%
3rd 50m Split	27.75	28.01	28.25	28.34	27.75	27.89	28.15	28.26	28.43	27.72
Strokes	35	30	30	28	37	-	32	34	33	31
Split Time:	1:19.65	1:22.43	1:21.27	1:21.93	1:21.33	1:21.71	1:22.01	1:21.22	1:22.40	1:21.52
4th 50m Split	27.90	28.59	28.30	28.59	27.96	27.79	28.43	28.75	28.31	27.97
Strokes	35	30	29		38	33	32	34?	34	32
Split Time:	1:47.55	1:51.02	1:49.57	1:50.52	1:49.29	1:49.50	1:50.44	1:49.97	1:50.71	1:49.49
200m PB:	1:44.14	1:42.00	1:44.06	1:44.39	1:47.35	1:49.50	1:46.44	1:45.55	1:46.13	1:44.80
Time off 200m PB:	3.41	9.02	5.51	6.13	1.94	0.00	4.00	4.42	4.58	4.69
Percentage of 200m PB	103.274%	108.843%	105.295%	105.872%	101.807%	100.000%	103.758%	104.188%	104.315%	104.475%
5th 50m Split	28.28	27.76	27.81	27.98	28.17	28.03	27.76	28.69	28.41	28.18
Strokes	35	30	30	29	37	33	33	34	35	32
Split Time:	2:15.83	2:18.78	2:17.38	2:18.50	2:17.46	2:17.53	2:18.20	2:18.66	2:19.12	2:17.67
6th 50m Split	28.18	28.39	28.05	28.14	28.03	28.10	28.09	28.23	28.03	28.66
Strokes	36	31	30	30	36	37	32	34	35	33
Split Time:	2:44.01	2:47.17	2:45.43	2:46.64	2:45.49	2:45.63	2:46.29	2:46.89	2:47.15	2:46.33
7th 50m Split	28.38	27.13	27.61	27.10	28.18	27.97	27.66	27.83	27.72	28.06
Strokes	36	33	31		37	-	34	34	36	33
Split Time:	3:12.39	3:14.30	3:13.04	3:13.74	3:13.67	3:13.60	3:13.95	3:14.72	3:14.87	3:14.39
8th 50m Split	27.57	25.77	27.04	26.40	27.01	27.10	27.16	26.50	26.48	27.14
Strokes	37	36	31	33	37	37	35	38	37	36
Total Time:	3:39.96	3:40.07	3:40.08	3:40.14	3:40.68	3:40.70	3:41.11	3:41.22	3:41.35	3:41.53

Here is Paul Biedermann’s 400m Freestyle World Record swim to view.

 

Note: World’s Fastest 400m Freestyle – Men’s Long Course Update April 2025

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.