Japan
| Performance | Wind | Venue | Date | |
|---|---|---|---|---|
| 4x100 Metres Relay | 44.89 | Chofu | 06 OCT 2013 | |
| 4x400 Metres Relay | 3:34.83 | Seoul (Olympic Stadium) | 20 SEP 1992 | |
| Medley Relay | 2:07.61 | Donetsk | 14 JUL 2013 |
| Performance | Place | Date | |
|---|---|---|---|
| 2019 | 45.64 | Osaka (JPN) | 19 MAY |
| 2018 | 45.79 | Osaka (JPN) | 20 MAY |
| 2016 | 45.38 | Yokohama | 29 OCT |
| 2015 | 45.49 | Wakayama | 30 JUL |
| 2014 | 45.38 | Eugene (Hayward Field), OR | 25 JUL |
| 2013 | 44.89 | Chofu | 06 OCT |
| 2012 | 45.89 | Kawasaki | 06 MAY |
| 2012 | 45.89 | Kawasaki | 06 MAY |
| 2011 | 46.18 | Kitakami | 05 AUG |
| 2010 | 45.78 | Moncton (Moncton Stadium) | 23 JUL |
| 2009 | 45.83 | Osaka | 09 MAY |
| 2008 | 46.81 | Osaka | 10 MAY |
| 2007 | 45.55 | Osaka | 05 MAY |
| 2006 | 45.66 | Macau | 18 JUL |
| 2004 | 45.80 | Grosseto (Stadio Zecchini) | 17 JUL |
| 2002 | 46.35 | Bangkok | 28 OCT |
| 2001 | 46.02 | Kumamoto | 04 AUG |
| 1999 | 46.51 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 17 JUL |
| 1996 | 45.97 | Sydney (SIAC Homebush) | 25 AUG |
| 1992 | 44.90 | Seoul (Olympic Stadium) | 20 SEP |
| Performance | Place | Date | |
|---|---|---|---|
| 2019 | 3:38.83 | Osaka (JPN) | 19 MAY |
| 2018 | 3:36.70 | Tampere (Ratina Stadium) | 14 JUL |
| 2017 | 3:39.77 | Kyoto (Nishikyogoku) | 18 JUN |
| 2016 | 3:37.67 | Okayama | 02 AUG |
| 2015 | 3:40.76 | Wakayama | 02 AUG |
| 2014 | 3:36.13 | Fukuroi | 08 NOV |
| 2013 | 3:35.03 | Fukuroi | 02 NOV |
| 2012 | 3:40.28 | Niigata | 02 AUG |
| 2011 | 3:42.27 | Kitakami | 06 AUG |
| 2010 | 3:39.25 | Yokohama | 24 OCT |
| 2009 | 3:37.86 | Nara | 02 AUG |
| 2008 | 3:41.23 | Yokohama | 26 OCT |
| 2007 | 3:43.86 | Kyoto | 17 JUN |
| 2006 | 3:43.27 | Osaka | 06 AUG |
| 2002 | 3:44.48 | Bangkok | 31 OCT |
| 2001 | 3:44.29 | Kumamoto | 06 AUG |
| 1992 | 3:34.83 | Seoul (Olympic Stadium) | 20 SEP |
| Performance | Place | Date | |
|---|---|---|---|
| 2013 | 2:07.61 | Donetsk | 14 JUL |
| 2011 | 2:10.54 | Lille | 09 JUL |
| 2009 | 2:10.27 | Bressanone | 12 JUL |
| 2007 | 2:11.70 | Ostrava | 14 JUL |
| 2005 | 2:09.72 | Marrakech (Sidi Youssef Ben Ali) | 16 JUL |
| 2003 | 2:11.34 | Sherbrooke | 13 JUL |
| 2001 | 2:12.76 | Debrecen | 14 JUL |
| 1999 | 2:11.72 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 18 JUL |
| Rank | Mark | Wind | Place | Date | |
|---|---|---|---|---|---|
| IAAF World Junior Championships 2014 | 6 | 45.40 | Eugene (Hayward Field), OR | 26 JUL 2014 | |
| 13th IAAF World Junior Championships | 7h1 | 45.78 | Moncton (Moncton Stadium) | 23 JUL 2010 | |
| 11th IAAF World Junior Championships | h3 | DQ | Beijing (Chaoyang Sport Center) | 19 AUG 2006 | |
| 10th IAAF World Junior Championships | 5sf1 | 45.80 | Grosseto (Stadio Zecchini) | 17 JUL 2004 | |
| 1st IAAF World Youth Championships | 5 | 46.51 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 17 JUL 1999 | |
| 6th IAAF World Junior Championships | 7 | 45.97 | Sydney (SIAC Homebush) | 25 AUG 1996 | |
| 4th IAAF World Junior Championships | 6 | 44.90 | Seoul (Olympic Stadium) | 20 SEP 1992 |
| Rank | Mark | Wind | Place | Date | |
|---|---|---|---|---|---|
| IAAF World U20 Championships Tampere 2018 | 3h2 | 3:36.70 | Tampere (Ratina Stadium) | 14 JUL 2018 | |
| 13th IAAF World Junior Championships | 8h1 | 3:50.65 | Moncton (Moncton Stadium) | 24 JUL 2010 | |
| 4th IAAF World Junior Championships | 5 | 3:34.83 | Seoul (Olympic Stadium) | 20 SEP 1992 |
| Rank | Mark | Wind | Place | Date | |
|---|---|---|---|---|---|
| 8th IAAF World Youth Championships | 3 | 2:07.61 | Donetsk | 14 JUL 2013 | |
| 7th IAAF World Youth Championships | 4h3 | 2:10.54 | Lille | 09 JUL 2011 | |
| 6th IAAF World Youth Championships | 8 | 2:10.27 | Bressanone | 12 JUL 2009 | |
| 5th IAAF World Youth Championships | 7 | 2:12.45 | Ostrava | 15 JUL 2007 | |
| 4th IAAF World Youth Championships | 6 | 2:10.66 | Marrakech (Sidi Youssef Ben Ali) | 17 JUL 2005 | |
| 3rd IAAF World Youth Championships | 5 | 2:11.34 | Sherbrooke | 13 JUL 2003 | |
| 2nd IAAF/Westel World Youth Championships | f | DQ | Debrecen | 15 JUL 2001 | |
| 1st IAAF World Youth Championships | 4 | 2:11.72 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 18 JUL 1999 |
Your search did not return any News results.