KM
Koki Maruyama

Koki Maruyama

JPNJPNMen
Birth dateSep 10, 1999
Height-
Weight-

Koki Maruyama is a Japan long-distance runner, born on September 10, 1999. He competes primarily in the 3000m, 5000m and 10000m.

His personal bests include 8:25.41 in the 3000m, 13:53.43 in the 5000m, 28:51.75 in the 10000m, 1:02:09 in the Semi and 47:16 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.

Key facts
Half Marathon
1:02:09
10 Miles Road
47:16
2026 season best
1:04:11
Feb 8, 2026 · Ishin Me-Life Stadium, Yamaguchi (JPN)
2026 season best
Last competition
54th Yamaguchi All-Corporate Half Marathon Championships
Feb 8, 2026 · 1:04:11
54th Yamaguchi All-Corporate Half Marathon Championships
Age
27 years old

As of Sep 17, 2026: Half Marathon 1:02:09, 10 Miles Road 47:16, 2026 season best 1:04:11 (Feb 8, 2026, Ishin Me-Life Stadium, Yamaguchi (JPN)) · Last competition: 54th Yamaguchi All-Corporate Half Marathon Championships, Feb 8, 2026, 1:04:11 · 27 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
Semi
1:04:11-Feb 8, 2026
↑
54th Yamaguchi All-Corporate Half Marathon Championships
2025
Semi
1:02:57-Feb 9, 2025
↑
53rd Yamaguchi All-Corporate Half Marathon Championships, Ishin Me-Life Stadium, Yamaguchi
2024
10000m
29:05.41-Nov 23, 2024
↑
2024 Hachioji Long Distance
2024
10MilesRoa
47:16-Dec 1, 2024-Kumamoto Kosa 10 mile Road Race
2024
Semi
1:02:09-Feb 11, 2024
↑
52nd Yamaguchi All-Corporate Half Marathon Championships
2022
3000m
8:25.41-Jun 25, 2022-Momoyama Athletic Park Stadium, Uozu (JPN)
2022
5000m
13:53.43-Jun 5, 2022
↑
NITTAIDAI Athletic Stadium, Yokohama (JPN)
2022
10000m
28:51.75-Oct 15, 2022
↑
Juntendo University Stadium, Inzai (JPN)
2021
5000m
14:23.54-Jun 6, 2021
↑
NITTAIDAI Athletic Stadium, Yokohama (JPN)
2021
10000m
29:20.43-Nov 24, 2021
↑
Municipal Stadium, Machida (JPN)
2021
Semi
1:06:10-Oct 23, 2021
↑
Tachikawa (JPN)
2018
10000m
29:55.29-Nov 24, 2018
↑
Kawasaki (JPN)

2026

1 performance
DisciplineResultWindDateCompetitions
Semi
1:04:11-Feb 854th Yamaguchi All-Corporate Half Marathon Championships

2025

1 performance

2024

4 performances
DisciplineResultWindDateCompetitions
10MilesRoa
47:16-Dec 1Kumamoto Kosa 10 mile Road Race
10000m
29:05.41-Nov 232024 Hachioji Long Distance
Semi
1:11:58-Nov 17Ageo City Half Marathon, Ageo
Semi
1:02:09-Feb 1152nd Yamaguchi All-Corporate Half Marathon Championships

2022

8 performances
DisciplineResultWindDateCompetitions
10000m
29:13.91-Nov 26Hachioji Long Distance Meeting, Gion Stadium, Machida
10000m
28:51.75-Oct 1510th Juntendo University Competition, Juntendo University Stadium, Inzai
5000m
14:37.54-Oct 1Athletics Challenge, Denka Big Swan Stadium, Niigata
5000m
14:08.11-Sep 2570th All Japan Corporate Team Championships, Nagaragawa Stadium, Gifu
5000m
14:13.09-Jul 13Hokuren Distance Challenge, Athletic Track, Abashiri
3000m
8:25.41-Jun 2551st Toyama Business Team Championships, Momoyama Athletic Park Stadium, Uozu
5000m
13:53.43-Jun 5296th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama
5000m
14:10.24-May 15Kumakuraju Memorial 53rd Niigata Business Team Competition, Niigatashi Field, Niigata

2021

5 performances
DisciplineResultWindDateCompetitions
10000m
29:20.43-Nov 24March Opposition, Municipal Stadium, Machida
Semi
1:06:10-Oct 23Hakone Ekiden Yosenkai Half Marathon, Tachikawa
5000m
14:23.54-Jun 6288th Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama
10000m
30:35.99-May 8287th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama
5000m
14:28.74-Apr 171st Waseda University Competition, Mikio Oda Memorial Athletic Field, Tokorozawa

2018

1 performance
DisciplineResultWindDateCompetitions
10000m
29:55.29-Nov 24Kawasaki Kanto Region Time Trials, Kawasaki

Honours

No medals

FAQ

Frequently asked questions

What is Koki Maruyama's Half Marathon personal best?

Koki Maruyama's Half Marathon personal best is 1:02:09, set on Feb 11, 2024 in Ishin Me-Life Stadium, Yamaguchi (JPN).

Which events does Koki Maruyama compete in?

Koki Maruyama competes in the Half Marathon and 10 Miles Road.

How did Koki Maruyama perform in 2026?

2026 season best: 1:04:11, set on Feb 8, 2026 in Ishin Me-Life Stadium, Yamaguchi (JPN). Last competition: 54th Yamaguchi All-Corporate Half Marathon Championships on Feb 8, 2026, 1:04:11.