Kosei Yamaguchi JPN   
Date of birth: 19 August 91
Age: 29 years 134 days
Club/team: 愛三工業
Name in Japanese: 山口 浩勢
5000m World Alltime no. 2854 13:41.21 Heusden 21 Jul 2018
3000m Steeplechase World Alltime no. 477 8:24.19 Osaka 4 Dec 2020
10,000m World Alltime no. 1261 28:12.05 Tajimi 9 Oct 2020
2000m Steeplechase World Alltime no. 224 5:32.32 Abashiri 4 Jul 2018
Half Marathon World Alltime no. 4267 1:03:29 Yamaguchi 14 Feb 2016
10,000m World Junior Alltime no. 424 28:55.33 Yokohama 20 Nov 2010

▲PROGRESSION

Personal bests in BOLD.

 
1500m
Outdoor Alltime  Show/hide
2017  3:52.82w   6Toyota1 Apr
 
3000m
Outdoor Alltime  Show/hide
2011  8:15.78w   7Kazo10 Apr
 
5000m
Outdoor Alltime  Show/hide
2012  13:53.74w    5Fukuroi13 Oct
2013  13:53.80w    4rCHiroshima28 Apr
2014  13:56.95w    6Yamaguchi12 Oct
2015  14:06.38w    10rBGifu27 Sep
2016  13:53.37w    1rBTokyo2 Apr
2017  13:52.61w    9Yokohama3 Dec
2018  13:41.21w   9rBHeusden21 Jul
2019  13:48.68w    10rBNobeoka4 May
2020  13:42.87w    2rBKumagaya19 Sep
 
10,000m
Outdoor Alltime  Show/hide
2010  28:55.33w    1rBYokohama20 Nov
2011  28:54.53w    5Yokohama19 Nov
2012  29:09.98w    10r5Yokohama17 Nov
2013  28:48.13w    11Yokohama16 Nov
2014  29:31.89w    18rBKawasaki29 Nov
2015  28:46.02w    10Tajimi12 Oct
2016  28:34.19w    5rDHachioji26 Nov
2017  28:34.32w    13rBMachida25 Nov
2018  28:34.14w    12rCHachioji24 Nov
2020  28:12.05w   8Tajimi9 Oct
 
20km, Road
Outdoor Alltime  Show/hide
2013  1:00:18w   24Tachikawa19 Oct
 
Half Marathon
Outdoor Alltime  Show/hide
2015  1:03:33w    37Yamaguchi15 Feb
2016  1:03:29w   25Yamaguchi14 Feb
 
2000m Steeplechase
Outdoor Alltime  Show/hide
2018  5:32.32w   1Abashiri4 Jul
 
3000m Steeplechase
Outdoor Alltime  Show/hide
2008  9:07.07w    4-19Tottori18 Oct
2010  8:47.94w    1Tokyo22 May
2011  8:53.04w    5Kobe24 Apr
2012  8:45.87w    1Tokyo19 May
2013  8:41.93w    1Yokohama25 May
2014  8:42.13w    5Yamaguchi11 Oct
2015  8:44.56w    4Niigata26 Jun
2016  8:34.81w    2Inzai7 Jul
2017  8:38.87w    1Kobe23 Apr
2018  8:30.98w    6Naimette-Xhovémont18 Jul
2019  8:31.37w    2Osaka21 Sep
2020  8:24.19w   1Osaka4 Dec

▲IN MAJOR EVENTS

 
Outdoor
3000m Steeplechase
WJ 2010: 12-199:00.87 2h1-198:49.74
AsC 2017: 58:58.58
AsianG 2018: 98:47.41
Cont Cup 2018: DNF
AsC 2019: 68:47.07
Cross Country 10.0km
WC 2017: 7331:49A
Cross Country 12.0km
AsC 2018: 438:27A
Cross Country 10.24km
WC 2019: 7935:04

▲PERSONAL BESTS

note: click on event name to get head to head stats against another athlete,
click on indoor/outdoor to see PB progression.

 
1500m
Outdoor3:52.82    Toyota1 Apr 2017
 
3000m
Outdoor8:15.78    Kazo10 Apr 2011
 
5000m
Outdoor13:41.21    Heusden21 Jul 2018
 
10,000m
Outdoor28:12.05    Tajimi9 Oct 2020
 
20km, Road
Outdoor1:00:18    Tachikawa19 Oct 2013
 
Half Marathon
Outdoor1:03:29    Yamaguchi14 Feb 2016
 
2000m Steeplechase
Winstreak: 1 (finals)  Show/hide   
Outdoor5:32.32    Abashiri4 Jul 2018
 
3000m Steeplechase
Winstreak: 1 (finals)  Show/hide   
Outdoor8:24.19    Osaka4 Dec 2020

▲AVERAGES & 10 BEST RESULTS

3000m Steeplechase, 10 best results (legal):
8:24.19   1Osaka4 Dec 2020
8:25.04   3Chitose18 Jul 2020
8:25.34   3Kumagaya19 Sep 2020
8:30.98   6Naimette-Xhovémont18 Jul 2018
8:31.25   1Auckland23 Feb 2020
8:31.37   2Osaka21 Sep 2019
8:34.40   2Yamaguchi24 Jun 2018
8:34.81   2Inzai7 Jul 2016
8:35.82   1Kobe22 Apr 2018
8:36.30   2Inzai7 Jul 2016
 
Average: 8:30.95
 
5000m, 10 best results (legal):
13:41.21   9rBHeusden21 Jul 2018
13:42.87   2rBKumagaya19 Sep 2020
13:46.08   2rDNobeoka5 May 2018
13:48.68   10rBNobeoka4 May 2019
13:52.61   9Yokohama3 Dec 2017
13:53.37   1rBTokyo2 Apr 2016
13:53.74   5Fukuroi13 Oct 2012
13:53.80   4rCHiroshima28 Apr 2013
13:53.89   9rBOsaka24 Sep 2017
13:54.56   4Gifu8 May 2016
 
Average: 13:50.081
 
10,000m, 10 best results (legal):
28:12.05   8Tajimi9 Oct 2020
28:34.14   12rCHachioji24 Nov 2018
28:34.19   5rDHachioji26 Nov 2016
28:34.32   13rBMachida25 Nov 2017
28:39.26   14Tajimi14 Oct 2017
28:46.02   10Tajimi12 Oct 2015
28:46.37   5rCHachioji28 Nov 2015
28:48.13   11Yokohama16 Nov 2013
28:52.07   8rBAbashiri16 Jul 2015
28:54.53   5Yokohama19 Nov 2011
 
Average: 28:40.108
 

Total results in db: 104

By event:

1500m:1
3000m:1
5000m:20
10,000m:15
20km, Road:1
Half Marathon:2
2000m Steeplechase:1
3000m Steeplechase:56
Cross Country 10.0km:4
Cross Country 12.0km:2
Cross Country 10.24km:1

▲IN 2020

position in the world list in brackets following the season's best,
junior list position in green and youth list position in orange.
help: click on competition name or Venue to see competition results.
help: click on placing to see event results in the competition.

5000m
13:42.87iw SB (193)2rBCorp ChKumagayaCorp Ch, Kumagaya19 Sep 
10,000m
28:12.05iw PB (124)8TajimiTajimi9 Oct 
3000m Steeplechase
8:31.25iwWL SB 1AucklandAuckland23 Feb 
8:25.04iw PB 3HokurenChitoseHokuren, Chitose18 Jul 
8:25.34iw 3Corp ChKumagayaCorp Ch, Kumagaya19 Sep 
8:24.19iw PB (17)1OsakaOsaka4 Dec 

▲TOP 100 WORLD LIST POSITIONS

SeasonInd/OutEventPosResult
2013Outdoor20km, Road551:00:18
2018Outdoor2000m Steeplechase35:32.32
2018Outdoor3000m Steeplechase878:30.98
2019Outdoor3000m Steeplechase888:31.37
2020Outdoor3000m Steeplechase178:24.19

▲WINSTREAKS