Hiroaki Masuoka

Birth dateFeb 18, 1986

Height-

Weight-

Hiroaki Masuoka is a Japan sprinter, born on February 18, 1986. He competes primarily in the 400m and 400mH.

His personal bests include 47.15 in the 400m and 49.76 in the 400mH. He is currently active on the international athletics circuit, representing Japan.

Key facts

400 m hurdles

49.76

#874 all-time

400 m

47.15

2012 season best

51.07

Jun 8, 2012 · Osaka (JPN)

2012 season best

Age

40 years old

As of Sep 17, 2026: 400 m hurdles 49.76 (#874 all-time), 400 m 47.15, 2012 season best 51.07 (Jun 8, 2012, Osaka (JPN)) · 40 years old

Personal bests

400m

47.15

400mH

49.76

#874 all-time

Performance Charts

Season bests

Season	Discipline	Result	Wind	Date	Trend	Competitions
2012	400mH	51.07	-	Jun 8, 2012	↑	Osaka (JPN)
2011	400m	47.19	-	Oct 9, 2011	↓	Yamaguchi (JPN)
2011	400mH	50.11	-	Jun 10, 2011	↑	Kumagaya (JPN)
2010	400mH	50.31	-	May 16, 2010	↑	Kumagaya (JPN)
2009	400mH	49.93	-	Oct 3, 2009	↑	Niigata (JPN)
2008	400mH	49.76	-	Oct 4, 2008	↑	Oita (JPN)
2007	400m	47.15	-	Jun 8, 2007	↓	Tokyo (JPN)
2007	400mH	51.02	-	May 13, 2007	↑	Tokyo (JPN)
2006	400mH	50.83	-	Aug 26, 2006	↑	Nagoya (JPN)
2005	400mH	53.13	-	May 14, 2005	↑	Tokyo (JPN)

2012

2 performances

Discipline	Result	Wind	Date	Competitions
400mH	51.07	-	Jun 8	Japanese Championships, Osaka
400mH	51.10	-	May 3	Shizuoka International Meeting, Shizuoka

2011

5 performances

Discipline	Result	Wind	Date	Competitions
400m	47.42	-	Oct 10	Yamaguchi 66th Kokutai, Yamaguchi
400m	47.19	-	Oct 9	Yamaguchi 66th Kokutai, Yamaguchi
400mH	51.09	-	Oct 7	Yamaguchi 66th Kokutai, Yamaguchi
400mH	50.81	-	Jun 11	Japanese Championships, Kumagaya
400mH	50.11	-	Jun 10	Japanese Championships, Kumagaya

2010

9 performances

Discipline	Result	Wind	Date	Competitions
400mH	50.97	-	Oct 1	Chiba
400mH	50.71	-	Sep 25	Niigata Corporate Ch., Niigata
400mH	50.74	-	Sep 25	Niigata Corporate Ch., Niigata
400mH	51.17	-	Aug 21	Hiroshima
400mH	51.07	-	Jun 4	Japanese Championships, Marugame
400mH	50.31	-	May 16	Kumagaya
400mH	50.85	-	May 16	Kumagaya
400mH	51.55	-	May 3	Shizuoka International Meeting, Shizuoka
400mH	51.48	-	Apr 11	Tokorozawa

2009

9 performances

Discipline	Result	Wind	Date	Competitions
400mH	49.93	-	Oct 3	Niigata
400mH	50.47	-	Oct 2	Niigata
400mH	52.22	-	Jul 23	Karlstad Folksam GP, Karlstad
400mH	50.75	-	Jul 12	Lappeenranta Games, Lappeenranta
400mH	51.79	-	Jun 26	Japanese Championships
400mH	50.08	-	May 9	Osaka GP 2009, Osaka
400mH	50.80	-	May 3	Shizuoka International Meeting, Shizuoka
400mH	50.93	-	Apr 19	Wakayama
400mH	51.23	-	Apr 12	Tokorozawa

2008

6 performances

Discipline	Result	Wind	Date	Competitions
400mH	49.76	-	Oct 4	Oita Kokutai National Sports Festival, Oita
400mH	50.58	-	Oct 3	Oita Kokutai National Sports Festival, Oita
400mH	51.55	-	Sep 27	Yamagata Corporate Ch., Yamagata
400mH	51.62	-	Sep 27	Yamagata Corporate Ch., Yamagata
400mH	52.00	-	Jun 26	Japanese Championships, Kawasaki
400mH	50.73	-	May 3	Shizuoka International Meeting, Shizuoka

2007

8 performances

Discipline	Result	Wind	Date	Competitions
400mH	53.35	-	Jun 9	Tokyo Japanese University Championships, Tokyo
400m	47.15	-	Jun 8	Tokyo Japanese University Championships, Tokyo
400m	48.72	-	Jun 8	Tokyo Japanese University Championships, Tokyo
400m	48.01	-	May 18	Tokyo Kanto Collegiate Championships, Tokyo
400mH	51.02	-	May 13	Tokyo Kanto Collegiate Championships, Tokyo
400mH	52.19	-	May 12	Tokyo Kanto Collegiate Championships, Tokyo
400mH	51.95	-	Apr 30	Shizuoka International Meeting, Shizuoka
400mH	52.33	-	Apr 22	Wakayama

2006

6 performances

Discipline	Result	Wind	Date	Competitions
400mH	50.83	-	Aug 26	Nagoya
400mH	52.70	-	Jun 30	Japanese Championships, Kobe
400mH	52.52	-	Jun 10	Yokohama Japanese University Championships, Yokohama
400mH	52.60	-	May 21	Yokohama Kanto Coll. Ch., Yokohama
400mH	51.45	-	May 20	Yokohama Kanto Coll. Ch., Yokohama
400mH	51.52	-	Apr 23	Tokorozawa

2005

1 performance

Discipline	Result	Wind	Date	Competitions
400mH	53.13	-	May 14	Tokyo

FAQ

Frequently asked questions

What is Hiroaki Masuoka's 400 m hurdles personal best?

Hiroaki Masuoka's 400 m hurdles personal best is 49.76, set on Oct 4, 2008 in Oita (JPN), #874 on the all-time list.

Which events does Hiroaki Masuoka compete in?

Hiroaki Masuoka competes in the 400 m hurdles and 400 m.

How did Hiroaki Masuoka perform in 2012?

2012 season best: 51.07, set on Jun 8, 2012 in Osaka (JPN).