KT
Koki Tanaka

Koki Tanaka

JPNJPNMen
Birth dateJan 12, 1994
Height-
Weight-

Koki Tanaka is a Japan middle-distance runner, born on January 12, 1994. He competes primarily in the 1500m, 5000m and 10000m.

His personal bests include 4:03.09 in the 1500m, 13:55.69 in the 5000m, 29:00.37 in the 10000m, 1:02:15 in the Semi and 2:13:36 in the Marathon. He is currently active on the international athletics circuit, representing Japan.

Key facts
Half Marathon
1:02:15
Marathon
2:13:36
2026 season best
1:06:13
Jan 25, 2026
2026 season best
Last competition
Osaka Half Marathon
Jan 25, 2026 · 1:06:13
Osaka Half Marathon
Age
32 years old

As of Sep 17, 2026: Half Marathon 1:02:15, Marathon 2:13:36, 2026 season best 1:06:13 (Jan 25, 2026) · Last competition: Osaka Half Marathon, Jan 25, 2026, 1:06:13 · 32 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
Semi
1:06:13-Jan 25, 2026
↓
Osaka Half Marathon
2025
Semi
1:08:17-Oct 19, 2025
↓
Tokyo Legacy Half Marathon
2021
1500m
4:03.09-May 22, 2021-Municipal Sayagatani Stadium, Kitakyushu (JPN)
2021
5000m
14:35.03-May 23, 2021
↓
Municipal Sayagatani Stadium, Kitakyushu (JPN)
2021
10000m
29:38.17-Oct 2, 2021
↓
Municipal Stadium, Miyoshi (JPN)
2021
Semi
1:04:47-Feb 14, 2021
↓
Yamaguchi (JPN)
2020
10000m
29:00.37-Oct 3, 2020
↓
Kokushikan University Stadium, Tama (JPN)
2019
5000m
14:29.58-Apr 6, 2019
↓
Tokyo (JPN)
2019
10000m
29:12.24-May 18, 2019
↓
Kumagaya (JPN)
2019
Semi
1:03:37-Jul 7, 2019
↓
Half Marathon, Gold Coast
2019
Marathon
2:13:36-Aug 25, 2019-Hokkaido Marathon, Sapporo
2018
5000m
13:55.69-Apr 22, 2018
↓
Yokohama (JPN)
2018
10000m
29:57.46-May 19, 2018
↓
Kumagaya (JPN)
2018
Semi
1:02:15-Jan 28, 2018
↓
Osaka (JPN)
2018
30Kilometr
1:33:15-Feb 18, 2018-Tokyo (JPN)
2017
5000m
14:32.15-Apr 30, 2017
↓
Tokyo (JPN)
2017
10000m
29:08.32-Dec 2, 2017
↓
Yokohama (JPN)
2017
Semi
1:03:17-Jan 29, 2017
↓
Osaka (JPN)
2016
5000m
14:14.87-Apr 24, 2016
↓
Yokohama (JPN)
2016
10000m
29:20.60-Jul 14, 2016
↓
Kitami (JPN)
2016
Semi
1:05:35-Mar 6, 2016
↓
Miura (JPN)
2015
20Kilometr
1:00:51-Oct 17, 2015
↓
Tachikawa (JPN)
2015
Semi
1:03:19-Feb 1, 2015
↓
Marugame (JPN)
2014
20Kilometr
1:00:29-Oct 18, 2014
↓
Tokyo (JPN)
2014
Semi
1:05:07-Feb 2, 2014
↓
Marugame (JPN)
2013
10000m
29:29.06-Nov 23, 2013
↓
Tokyo (JPN)

2026

1 performance
DisciplineResultWindDateCompetitions
Semi
1:06:13-Jan 25Osaka Half Marathon

2025

1 performance
DisciplineResultWindDateCompetitions
Semi
1:08:17-Oct 19Tokyo Legacy Half Marathon

2021

5 performances
DisciplineResultWindDateCompetitions
10000m
29:38.17-Oct 23rd Long Distance Meeting, Municipal Stadium, Miyoshi
5000m
14:41.47-Sep 192nd Long Distance Meeting, Municipal Stadium, Miyoshi
5000m
14:35.03-May 2364th Kyushu Business Group Championships, Municipal Sayagatani Stadium, Kitakyushu
1500m
4:03.09-May 2264th Kyushu Business Group Championships, Municipal Sayagatani Stadium, Kitakyushu
Semi
1:04:47-Feb 14All Japan Corporate Team Half Marathon Ch., Yamaguchi

2020

3 performances
DisciplineResultWindDateCompetitions
10000m
29:28.64-Dec 5282nd Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama
10000m
29:00.37-Oct 31st Kokushikan University Long Distance Competition, Kokushikan University Stadium, Tama
10000m
30:29.38-Jul 2483rd Tokyo Championships, Komazawa Olympic Park Athletic Stadium, Tokyo

2019

8 performances
DisciplineResultWindDateCompetitions
10000m
30:02.81-Nov 23Hachioji Long Distance Meet, Hosei University Stadium, Machida
Semi
1:04:23-Oct 6Half Marathon
Marathon
2:13:36-Aug 25Hokkaido Marathon, Sapporo
Semi
1:03:37-Jul 7Half Marathon, Gold Coast
10000m
29:12.24-May 1861st East Japan Corporate Teams Championships, Kumagaya
10000m
30:06.94-Apr 2882nd Tokyo Championships, Tokyo
10000m
29:45.04-Apr 2067th Hyogo Relay Carnival, Universiade Commemorative Stadium, Kobe
5000m
14:29.58-Apr 61st Setagaya Competition, Tokyo

2018

4 performances
DisciplineResultWindDateCompetitions
10000m
29:57.46-May 19Kumagaya East Japan Corporate Teams Championships, Kumagaya
5000m
13:55.69-Apr 22Yokohama Nittai University Distance Meet, Yokohama
30Kilometr
1:33:15-Feb 18Tokyo Ohme-Hochi Road Race, Tokyo
Semi
1:02:15-Jan 28Osaka Half Marathon, Osaka

2017

6 performances
DisciplineResultWindDateCompetitions
10000m
29:08.32-Dec 2Yokohama Nittai University Time Trials, Yokohama
10000m
30:23.81-Sep 23Yokohama Nittai University Distance Meet, Yokohama
10000m
30:15.15-Jun 3Yokohama Nittai University Time Trials, Yokohama
5000m
14:32.15-Apr 30Tokyo
Semi
1:03:36-Feb 12Yamaguchi All-Corporate Half Marathon Championships, Yamaguchi
Semi
1:03:17-Jan 29Osaka Half Marathon, Osaka

2016

5 performances
DisciplineResultWindDateCompetitions
10000m
29:30.36-Nov 26Hachioji Long Distance Meet, Hachioji
Semi
1:05:55-Aug 21San Diego America's Finest City Half Marathon, San Diego, CA
10000m
29:20.60-Jul 14Kitami Hokuren Distance Challenge, Kitami
5000m
14:14.87-Apr 24Yokohama Nittai University Time Trials, Yokohama
Semi
1:05:35-Mar 6Miura Half Marathon, Miura

2015

2 performances
DisciplineResultWindDateCompetitions
20Kilometr
1:00:51-Oct 17Tachikawa 20 km, Tachikawa
Semi
1:03:19-Feb 1Marugame Half Marathon, Marugame

2014

3 performances
DisciplineResultWindDateCompetitions
20Kilometr
1:00:29-Oct 18Tokyo Yosenkai 20 km Road Race, Tokyo
Semi
1:05:11-Mar 2Tachikawa Japanese Univ. Half Marathon Ch., Tachikawa
Semi
1:05:07-Feb 2Marugame Half Marathon, Marugame

2013

1 performance
DisciplineResultWindDateCompetitions
10000m
29:29.06-Nov 23Tokyo Kanto Region University Time Trials, Tokyo

Honours

No medals

FAQ

Frequently asked questions

What is Koki Tanaka's Half Marathon personal best?

Koki Tanaka's Half Marathon personal best is 1:02:15, set on Jan 28, 2018 in Osaka (JPN).

Which events does Koki Tanaka compete in?

Koki Tanaka competes in the Half Marathon and Marathon.

How did Koki Tanaka perform in 2026?

2026 season best: 1:06:13, set on Jan 25, 2026. Last competition: Osaka Half Marathon on Jan 25, 2026, 1:06:13.