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Koji Kobayashi

Koji Kobayashi

JPNJPNMen
Birth dateJan 16, 1989
Height-
Weight-

Koji Kobayashi is a Japan middle-distance runner, born on January 16, 1989. He competes primarily in the 1500m, 3000m and 5000m.

His personal bests include 3:50.71 in the 1500m, 8:22.60 in the 3000m, 14:04.56 in the 5000m, 29:12.69 in the 10000m and 1:03:02 in the Semi. He is currently active on the international athletics circuit, representing Japan.

Key facts
Marathon
2:08:51
10 Miles Road
47:27
2021 season best
2:17:19
Feb 28, 2021 · Otsu (JPN)
2021 season best
Last competition
The 76th Lake Biwa Mainichi Marathon
Feb 28, 2021 · 2:17:19
The 76th Lake Biwa Mainichi Marathon
Age
37 years old

As of Sep 14, 2026: Marathon 2:08:51, 10 Miles Road 47:27, 2021 season best 2:17:19 (Feb 28, 2021, Otsu (JPN)) · Last competition: The 76th Lake Biwa Mainichi Marathon, Feb 28, 2021, 2:17:19 · 37 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2021
Marathon
2:17:19-Feb 28, 2021
↓
The 76th Lake Biwa Mainichi Marathon
2020
3000m
8:22.60-Jul 4, 2020-Mikio Oda Memorial Athletic Field, Tokorozawa (JPN)
2020
Marathon
2:09:55-Feb 2, 2020
↓
Beppu-Oita Mainichi Marathon
2019
1500m
3:58.66-May 18, 2019
↓
Kumagaya (JPN)
2019
5000m
14:30.23-May 19, 2019
↓
Kumagaya (JPN)
2019
10MilesRoa
48:30-Dec 1, 2019
↓
Kosa 10 Mile
2019
Marathon
2:18:40-Mar 10, 2019
↓
Lake Biwa Marathon
2017
10000m
29:30.91-Sep 23, 2017
↓
Yokohama (JPN)
2015
Semi
1:04:57-Jun 28, 2015
↓
Hakodate (JPN)
2014
10MilesRoa
48:04-Dec 7, 2014
↓
Kosa (JPN)
2014
Marathon
2:08:51-Feb 23, 2014
↓
Tokyo Marathon
2013
10MilesRoa
47:40-Dec 1, 2013
↓
Kosa (JPN)
2013
Semi
1:03:13-May 12, 2013
↓
Sendai (JPN)
2013
Marathon
2:11:31-Sep 29, 2013
↓
Berlin Marathon
2012
5000m
14:04.56-Jun 23, 2012
↓
Shibetsu (JPN)
2012
10MilesRoa
47:27-Dec 2, 2012
↓
Kosa (JPN)
2012
Marathon
2:10:40-Oct 7, 2012
↓
Chicago Marathon
2011
1500m
3:50.71-Oct 8, 2011
↓
Yamaguchi (JPN)
2011
5000m
14:18.75-Jun 29, 2011
↓
Shibetsu (JPN)
2011
10000m
29:34.86-Apr 23, 2011
↓
Kobe (JPN)
2011
10MilesRoa
47:59-Dec 4, 2011
↓
Kosa (JPN)
2010
10000m
29:12.69-Nov 20, 2010
↓
Yokohama (JPN)
2010
20Kilometr
1:00:16-Oct 16, 2010
↑
Tachikawa (JPN)
2010
Semi
1:03:17-Mar 14, 2010
↓
Tachikawa (JPN)
2009
Semi
1:03:02-Mar 8, 2009
↓
Tachikawa (JPN)
2007
20Kilometr
1:01:31-Oct 20, 2007
↑
Tachikawa (JPN)

2021

1 performance
DisciplineResultWindDateCompetitions
Marathon
2:17:19-Feb 28The 76th Lake Biwa Mainichi Marathon

2020

2 performances
DisciplineResultWindDateCompetitions
3000m
8:22.60-Jul 42nd Waseda University Competition, Mikio Oda Memorial Athletic Field, Tokorozawa
Marathon
2:09:55-Feb 2Beppu-Oita Mainichi Marathon

2019

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
48:30-Dec 1Kosa 10 Mile
5000m
14:30.23-May 1961st East Japan Corporate Teams Championships, Kumagaya
1500m
3:58.66-May 1861st East Japan Corporate Teams Championships, Kumagaya
Marathon
2:18:40-Mar 10Lake Biwa Marathon

2017

1 performance
DisciplineResultWindDateCompetitions
10000m
29:30.91-Sep 23Yokohama Nittai University Distance Meet, Yokohama

2015

1 performance
DisciplineResultWindDateCompetitions
Semi
1:04:57-Jun 28Hakodate Half Marathon, Hakodate

2014

3 performances
DisciplineResultWindDateCompetitions
10MilesRoa
48:04-Dec 7Kosa 10 Miles, Kosa
Marathon
2:11:43-Oct 12Chicago Marathon
Marathon
2:08:51-Feb 23Tokyo Marathon

2013

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:40-Dec 1Kosa 10 Miles, Kosa
Marathon
2:11:31-Sep 29Berlin Marathon
Semi
1:03:13-May 12Sendai International Half Marathon, Sendai
Marathon
2:14:11-Mar 3Otsu Lake Biwa Marathon, Otsu

2012

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:27-Dec 2Kosa 10 Miles, Kosa
Marathon
2:10:40-Oct 7Chicago Marathon
5000m
14:04.56-Jun 23Shibetsu Hokuren Distance Challenge, Shibetsu
Marathon
2:12:52-Feb 12Nobeoka Marathon, Nobeoka

2011

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:59-Dec 4Kosa 10 Miles, Kosa
1500m
3:50.71-Oct 8Yamaguchi 66th Kokutai, Yamaguchi
5000m
14:18.75-Jun 29Shibetsu Hokuren Distance Challenge, Shibetsu
10000m
29:34.86-Apr 23Kobe Hyogo Relays, Kobe - College Events

2010

4 performances
DisciplineResultWindDateCompetitions
10000m
29:12.69-Nov 20Yokohama Nittai University Time Trials, Yokohama
20Kilometr
1:00:16-Oct 16Tachikawa
Semi
1:05:10-May 23Tokyo Kanto Regional Championships, Tokyo
Semi
1:03:17-Mar 14Tachikawa Half Marathon, Tachikawa

2009

1 performance
DisciplineResultWindDateCompetitions
Semi
1:03:02-Mar 8Half Marathon, Tachikawa

2007

1 performance
DisciplineResultWindDateCompetitions
20Kilometr
1:01:31-Oct 20Tachikawa 20 km, Tachikawa

Honours

8

Berlin Marathon

Marathon

2013
FAQ

Frequently asked questions

What is Koji Kobayashi's Marathon personal best?

Koji Kobayashi's Marathon personal best is 2:08:51, set on Feb 23, 2014 in Tokyo (JPN).

Which events does Koji Kobayashi compete in?

Koji Kobayashi competes in the Marathon and 10 Miles Road.

How did Koji Kobayashi perform in 2021?

2021 season best: 2:17:19, set on Feb 28, 2021 in Otsu (JPN). Last competition: The 76th Lake Biwa Mainichi Marathon on Feb 28, 2021, 2:17:19.