TK
Tsukasa Koyama

Tsukasa Koyama

JPNJPNMen
Birth dateJan 21, 1992
Height-
Weight-

Tsukasa Koyama is a Japan long-distance runner, born on January 21, 1992. He competes primarily in the 5000m, 10000m and Semi.

His personal bests include 14:09.81 in the 5000m, 28:44.00 in the 10000m, 1:02:09 in the Semi, 2:08:00 in the Marathon and 47:26 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.

Key facts
Marathon
2:08:00
#739 all-time
Half Marathon
1:02:09
2026 season best
2:27:03
Apr 20, 2026 · Boston, MA (USA)
2026 season best
Last competition
Boston Marathon
Apr 20, 2026 · 2:27:03
Boston Marathon
Age
34 years old

As of Sep 13, 2026: Marathon 2:08:00 (#739 all-time), Half Marathon 1:02:09, 2026 season best 2:27:03 (Apr 20, 2026, Boston, MA (USA)) · Last competition: Boston Marathon, Apr 20, 2026, 2:27:03 · 34 years old

PB

Personal bests

14:09.81
28:44.00
1:02:09
2:08:00
#739 all-time
47:26
1:00:40

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
Marathon
2:27:03-Apr 20, 2026
↓
Boston Marathon
2025
Marathon
2:09:25-Feb 24, 2025
↓
Osaka Marathon, Osaka
2024
10000m
29:43.00-May 18, 2024
↓
66th East Japan Corporate Athletics Championships
2023
Marathon
2:08:00-Feb 5, 2023
↓
Beppu-Oita Mainichi Marathon
2022
5000m
14:14.42-Jul 16, 2022
↓
Aoba Park Athletic Field, Chitose (JPN)
2022
10000m
28:44.00-Nov 26, 2022
↓
Gion Stadium, Machida (JPN)
2021
10000m
28:53.51-Nov 27, 2021
↓
Kamiyugi Park Athletic Stadium, Hachioji (JPN)
2020
5000m
14:27.30-Jul 19, 2020
↓
Shikishima Park Prefectural Athletic Field, Maebashi (JPN)
2020
10000m
28:52.10-Sep 27, 2020
↓
-
2020
Marathon
2:08:53-Feb 2, 2020
↓
Beppu-Oita Mainichi Marathon
2019
10MilesRoa
47:46-Dec 1, 2019
↓
Kosa 10 Mile
2019
Semi
1:02:09-Feb 3, 2019
↑
Kagawa Marugame International Half Marathon
2018
10MilesRoa
47:41-Dec 2, 2018
↓
Kosa (JPN)
2018
Semi
1:04:43-May 13, 2018
↑
Sendai (JPN)
2018
Marathon
2:11:20-Feb 4, 2018
↓
Beppu-Oita Mainichi Marathon
2017
10000m
29:19.03-Apr 22, 2017
↓
Yokohama (JPN)
2017
Semi
1:05:24-Jul 2, 2017
↑
-
2017
Marathon
2:13:58-Feb 26, 2017
↓
Tokyo (JPN)
2016
10000m
29:21.82-Sep 24, 2016
↓
Yokohama (JPN)
2015
5000m
14:09.81-Jul 5, 2015
↓
Shibetsu (JPN)
2015
10000m
29:10.33-Apr 25, 2015
↓
Kobe (JPN)
2015
10MilesRoa
47:53-Nov 29, 2015
↓
Kosa (JPN)
2015
Marathon
2:18:13-Feb 8, 2015
↓
Nobeoka (JPN)
2014
10000m
28:57.23-Nov 15, 2014
↓
Yokohama (JPN)
2014
10MilesRoa
47:26-Dec 7, 2014
↓
Kosa (JPN)
2013
10000m
28:45.24-Nov 23, 2013
↓
Tokyo (JPN)
2013
Semi
1:03:40-Mar 3, 2013
↑
Tachikawa (JPN)
2012
10000m
28:46.20-Nov 24, 2012
↓
Tokyo (JPN)
2012
20Kilometr
1:00:40-Oct 20, 2012
↑
Tachikawa (JPN)
2012
Semi
1:03:28-Mar 4, 2012
↑
Tachikawa (JPN)
2011
20Kilometr
1:01:41-Oct 15, 2011
↑
Tachikawa (JPN)

2026

1 performance
DisciplineResultWindDateCompetitions
Marathon
2:27:03-Apr 20Boston Marathon

2025

1 performance
DisciplineResultWindDateCompetitions
Marathon
2:09:25-Feb 24Osaka Marathon, Osaka

2024

1 performance
DisciplineResultWindDateCompetitions
10000m
29:43.00-May 1866th East Japan Corporate Athletics Championships

2023

2 performances
DisciplineResultWindDateCompetitions
Marathon
2:13:30-Oct 15Marathon Grand Championship - Paris 24 Selection Race, Tokyo
Marathon
2:08:00-Feb 5Beppu-Oita Mainichi Marathon

2022

3 performances
DisciplineResultWindDateCompetitions
10000m
28:44.00-Nov 26Hachioji Long Distance Meeting, Gion Stadium, Machida
5000m
14:14.42-Jul 16Hokuren Distance Challenge, Aoba Park Athletic Field, Chitose
5000m
14:28.42-May 1564th East Japan Business Group Championship, ND Soft Stadium, Tendo

2021

2 performances
DisciplineResultWindDateCompetitions
10000m
28:53.51-Nov 27Long Distance Meeting, Kamiyugi Park Athletic Stadium, Hachioji
10000m
28:53.71-Apr 24286th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama

2020

4 performances
DisciplineResultWindDateCompetitions
10000m
29:19.81-Oct 2483rd Heisei Kokusai University Long Distance Competition, Athletics Stadium, Konosu
10000m
28:52.10-Sep 27Tokai University Time Trials, Kamogawa
5000m
14:27.30-Jul 19Gunma Prefecture Championships, Shikishima Park Prefectural Athletic Field, Maebashi
Marathon
2:08:53-Feb 2Beppu-Oita Mainichi Marathon

2019

2 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:46-Dec 1Kosa 10 Mile
Semi
1:02:09-Feb 3Kagawa Marugame International Half Marathon

2018

3 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:41-Dec 2Kosa 10 Miles, Kosa
Semi
1:04:43-May 13Sendai Half Marathon, Sendai
Marathon
2:11:20-Feb 4Beppu-Oita Mainichi Marathon

2017

4 performances
DisciplineResultWindDateCompetitions
Marathon
2:20:06-Sep 17Sydney Marathon, Sydney
Semi
1:05:24-Jul 2Hakodate Half Marathon, Hakodate
10000m
29:19.03-Apr 22Yokohama Nittai University Time Trials, Yokohama
Marathon
2:13:58-Feb 26Tokyo Marathon, Tokyo

2016

1 performance
DisciplineResultWindDateCompetitions
10000m
29:21.82-Sep 24Yokohama Nittai University Time Trials, Yokohama

2015

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:53-Nov 29Kosa 10 Miles, Kosa
5000m
14:09.81-Jul 5Shibetsu Hokuren Distance Challenge, Shibetsu
10000m
29:10.33-Apr 25Kobe Hyogo Relays, Kobe
Marathon
2:18:13-Feb 8Nobeoka Marathon, Nobeoka

2014

6 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:26-Dec 7Kosa 10 Miles, Kosa
10000m
28:57.23-Nov 15Yokohama Nittai University Distance, Yokohama
10000m
29:04.98-Sep 27Yokohama Nittai University Distance Meet, Yokohama
10000m
29:17.93-Jun 25Fukagawa Hokuren Distance Challenge, Fukagawa
10000m
29:29.69-May 17Fukushima East Japan Corporate Ch., Fukushima
10000m
29:39.73-Apr 19Kobe Hyogo Relays, Kobe

2013

2 performances
DisciplineResultWindDateCompetitions
10000m
28:45.24-Nov 23Tokyo Kanto Region University Time Trials, Tokyo
Semi
1:03:40-Mar 3Tachikawa Japanese University Half Marathon Ch., Tachikawa

2012

5 performances
DisciplineResultWindDateCompetitions
10000m
28:46.20-Nov 24Tokyo Kanto Region University Long Distance Time Trials, Tokyo
20Kilometr
1:00:40-Oct 2020 km, Tachikawa
10000m
29:23.40-Jun 30Tokyo
10000m
29:15.74-Apr 14Yokohama Nittai University Time Trials, Yokohama
Semi
1:03:28-Mar 4Tachikawa Japanese Univ. Half Marathon Ch., Tachikawa

2011

1 performance
DisciplineResultWindDateCompetitions
20Kilometr
1:01:41-Oct 15Tachikawa 20 km, Tachikawa

Honours

No medals

FAQ

Frequently asked questions

What is Tsukasa Koyama's Marathon personal best?

Tsukasa Koyama's Marathon personal best is 2:08:00, set on Feb 5, 2023 in Beppu (JPN), #739 on the all-time list.

Which events does Tsukasa Koyama compete in?

Tsukasa Koyama competes in the Marathon and Half Marathon.

How did Tsukasa Koyama perform in 2026?

2026 season best: 2:27:03, set on Apr 20, 2026 in Boston, MA (USA). Last competition: Boston Marathon on Apr 20, 2026, 2:27:03.