Swimming at the 2017 SEA Games – Men's 400 metre freestyle

Swimming – Men's 400 metre freestyle at the 2017 SEA Games
Venue	National Aquatic Centre
Date	21 August 2017
Competitors	11 from 7 nations
Winning time	3:50.26 GR
Medalists
Welson Sim Wee Sheng    Malaysia   Aflah Fadlan Prawira    Indonesia   Nguyễn Hữu Kim Sơn    Vietnam

Main article: Swimming at the 2017 SEA Games

The men's 400 metre freestyle competition of the swimming event at the 2017 SEA Games was held on 21 August at the National Aquatic Centre in Kuala Lumpur, Malaysia.

Records

Prior to this competition, the existing Asian and Games records were as follows:

Asian Record	Sun Yang (CHN)	3:40.14	London, Great Britain	28 July 2012
Games Record	Welson Sim Wee Sheng (MAS)	3:53.97	Singapore, Singapore	11 June 2015

Schedule

All times are Malaysia Standard Time (UTC+08:00)

Date	Time	Event
Monday, 21 August 2017	09:20	Heat 1
	09:20	Heat 2
	19:15	Final

Results

Heats

The heats were held on 21 August.

Heat 1

Source: Heat 1 results

Rank	Lane	Athletes	Time	Notes
1	4	Aflah Fadlan Prawira (INA)	03:59.32	Q
2	5	Tanakrit Kittiya (THA)	04:01.21	Q
3	3	Jessie Khing Lacuna (PHI)	04:01.84	Q
4	6	Putera Muhammad Randa (INA)	04:02.30	Q
–	2	Hoàng Quý Phước (VIE)	DNS

Heat 2

Source: Heat 2 results

Rank	Lane	Athletes	Time	Notes
1	4	Welson Sim Wee Sheng (MAS)	03:56.20	Q
3	5	Pang Sheng Jun (SGP)	03:59.80	Q
2	7	Nguyễn Hữu Kim Sơn (VIE)	04:00.44	Q
4	3	Yeap Zheng Yang (MAS)	04:03.09	Q
5	6	Benedict Boon (SGP)	04:03.85
6	2	Ahnt Khaung Htut (MYA)	04:31.80

Final

Source: Final Results

The final was held on 21 August.

Rank	Lane	Athletes	Time	Notes
	4	Welson Sim Wee Sheng (MAS)	3:50.26	GR
	5	Aflah Fadlan Prawira (INA)	3:54.15
	6	Nguyễn Hữu Kim Sơn (VIE)	3:54.20
4	3	Pang Sheng Jun (SGP)	3:54.64
5	2	Tanakrit Kittiya (THA)	3:59.45
6	7	Jessie Khing Lacuna (PHI)	4:00.82
7	8	Yeap Zheng Yang (MAS)	4:00.98
8	1	Putera Muhammad Randa (INA)	4:04.20