The Men's 400 metres T53 event at the 2016 Summer Paralympics took place at the Estádio Olímpico João Havelange on 10 and 11 September. It featured 19 athletes.

Records Prior to the competition, the existing World and Paralympic records were as follows:

Worldrecord47.3626 June 2010Arbon, SwitzerlandParalympic record47.6711 September 2008Beijing, China

Results Heats Qualification rule: The first two finishers in each heat (Q) and the next two fastest (q) qualify for the final.

Heat 1 Rank Lane Athlete Nationality Time Notes 1 Brent Lakatos 50.47 , 2 Brian Siemann 51.30 3 Yu Shiran 51.51 4 Jung Dong Ho 52.30 5 Richard Colman 52.59 6 Hamad Aladwani 52.97 - Pichet Krungget DNS

Heat 2 Rank Lane Athlete Nationality Time Notes 1 Pongsakorn Paeyo 48.38 2 Li Huzhao 49.48 3 Joshua George 50.11 4 Jean-Philippe Maranda 52.24 5 Nicolas Brignone 53.01 6 Mickey Bushell 54.02

Heat 3 Rank Lane Athlete Nationality Time Notes 1 Pierre Fairbank 49.06 , 2 Zhao Yufei 49.99 , 3 Moatez Jomni 51.14 4 Hitoshi Matsunaga 52.71 5 Ariosvaldo Fernandes Silva DSQ 6 Yoo Byung Hoon DSQ

Final Rank Lane Athlete Nationality Time Notes Pongsakorn Paeyo 47.91 Brent Lakatos 48.53 Pierre Fairbank 49.00 4 Li Huzhao 50.11 5 Brian Siemann 50.20 6 Zhao Yufei 50.42 7 Joshua George 50.80 8 Moatez Jomni 51.53

References