Kaisei Okada

Birth dateAug 30, 2005

Height-

Weight-

Kaisei Okada is a Japan middle-distance runner, born on August 30, 2005. He competes primarily in the 800m, 1500m and 3000m.

His personal bests include 1:55.73 in the 800m, 3:53.47 in the 1500m, 7:59.59 in the 3000m, 13:19.44 in the 5000m and 27:37.06 in the 10000m. He is currently active on the international athletics circuit, representing Japan.

Key facts

10 000 m

27:37.06

#495 all-time

Half Marathon

1:01:11

2026 season best

28:31.56

Mar 28, 2026 · JSerra Catholic HS, San Juan Capistrano, CA (USA)

2026 season best

Last competition

Sunset Tour, Jack Kemp Stadium - Occidental College, Los Angeles, CA

Jul 11, 2026 · 13:19.77

Sunset Tour, Jack Kemp Stadium - Occidental College, Los Angeles, CA

Age

21 years old

As of Sep 12, 2026: 10 000 m 27:37.06 (#495 all-time), Half Marathon 1:01:11, 2026 season best 28:31.56 (Mar 28, 2026, JSerra Catholic HS, San Juan Capistrano, CA (USA)) · Last competition: Sunset Tour, Jack Kemp Stadium - Occidental College, Los Angeles, CA, Jul 11, 2026, 13:19.77 · 21 years old

Personal bests

1:55.73

3:53.47

7:59.59

13:19.44

27:37.06

1:01:11

13:41

7:59.59

3:57.9HT

Performance Charts

Season bests

Season	Discipline	Result	Wind	Date	Trend	Competitions
2026	MileRoad	3:57.9h	-	Jun 20, 2026	-	Ginza Road Mile, Tokyo
2026	5000m	13:19.44	-	May 4, 2026	↑	37th Golden Games in Nobeoka
2026	10000m	28:31.56	-	Mar 28, 2026	↓	The TEN
2026	CrossCount	29:42	-	Feb 21, 2026	↓	18th Asian Cross Country Championships, Uminonakamichi Seaside Park Cross Country Course, Fukuoka - XC 10.0km
2025	3000m	7:59.59	-	Feb 14, 2025	↑	Boston University David Hemery Valentine Invitational
2025	3000m-short-track	7:59.59	-	Feb 14, 2025	-	Boston University David Hemery Valentine Invitational
2025	5000m	13:38.37	-	Apr 12, 2025	↑	33rd Kanakuri Memorial Middle and Long Distance Invitational Meet, Egao Kenko Stadium, Kumamoto
2025	5Kilometre	13:41	-	Sep 28, 2025	-	The Road of Waseda
2025	10000m	27:37.06	-	Nov 22, 2025	↓	Hachioji Long Distance
2025	Semi	1:01:11	-	Feb 2, 2025	↑	77th Kagawa Marugame International Half Marathon, Marugame
2024	5000m	13:34.09	-	Jun 1, 2024	↑	The 9th NITTAIDAI Challenge Games
2024	Semi	1:04:28	-	Oct 19, 2024	↑	The 101st Hakone Ekiden Qualifying Meet, Showa Kinen Park, Tachikawa
2023	5000m	13:55.62	-	May 4, 2023	↑	34th Golden Games
2023	CrossCount	27:05	-	Feb 18, 2023	↓	44th World Athletics Cross Country Championships, Bathurst
2022	800m	1:55.73	-	Aug 22, 2022	-	Municipal Nishikyogoku Stadium, Kyoto (JPN)
2022	1500m	3:53.47	-	Apr 10, 2022	-	Municipal Nishikyogoku Stadium, Kyoto (JPN)
2022	5000m	14:03.20	-	Oct 6, 2022	↑	77th National Sports Festival
2021	3000m	8:30.70	-	Jul 18, 2021	↑	Municipal Nishikyogoku Stadium, Kyoto (JPN)
2021	5000m	14:27.36	-	Oct 9, 2021	↑	Yashima Stadium, Takamatsu (JPN)
2020	3000m	8:52.57	-	Aug 22, 2020	↑	Expo '70 Stadium, Suita (JPN)

Discipline	Result	Wind	Date	Competitions
5000m	13:19.77	-	Jul 11	Sunset Tour, Jack Kemp Stadium - Occidental College, Los Angeles, CA
MileRoad	3:57.9HT	-	Jun 20	Ginza Road Mile, Tokyo
MileRoad	3:57.9HT	-	Jun 20	Ginza Road Mile, Tokyo
5000m	13:37.76	-	Jun 14	Japanese Championships
5000m	13:37.76	-	Jun 12	Japanese Championships
5000m	13:36.63	-	Jun 12	Japanese Championships
5000m	13:31.43	-	May 24	The 105th Kanto Inter-University Track＆Field Championships
5000m	13:31.43	-	May 21	The 105th Kanto Inter-University Track＆Field Championships
5000m	13:19.44	-	May 4	37th Golden Games in Nobeoka
10000m	28:31.56	-	Mar 28	The TEN
CrossCount	29:42	-	Feb 21	18th Asian Cross Country Championships, Uminonakamichi Seaside Park Cross Country Course, Fukuoka - XC 10.0km

Discipline	Result	Wind	Date	Competitions
10000m	27:37.06	-	Nov 22	Hachioji Long Distance
5Kilometre	13:41	-	Sep 28	The Road of Waseda
10000m	29:03.47	-	Jul 19	HOKUREN Distance Challenge 2025 in ABASHIRI, Athletic Track, Abashiri
5000m	13:54.64	-	Jul 6	Japanese Championships, National Stadium, Tokyo
5000m	13:54.64	-	Jul 4	Japanese Championships, National Stadium, Tokyo
5000m	13:39.91	-	Jul 4	Japanese Championships, National Stadium, Tokyo
10000m	28:30.23	-	May 24	Selection Meeting for 57th All Japan Inter-University Ekiden, Lemon Gas Stadium, Hiratsuka
5000m	13:41.81	-	May 4	36th Golden Games in Nobeoka
10000m	29:01.01	-	Apr 26	All Japan University Track & Field Challenge, Tokai University Stadium, Hiratsuka
10000m	29:01.01	-	Apr 25	All Japan University Track & Field Challenge, Tokai University Stadium, Hiratsuka
5000m	13:38.37	-	Apr 12	33rd Kanakuri Memorial Middle and Long Distance Invitational Meet, Egao Kenko Stadium, Kumamoto
3000m-short-track	8:01.84	-	Mar 2	Last Chance Indoor National Qualifier
3000m-short-track	7:59.59	-	Feb 15	Boston University David Hemery Valentine Invitational
3000m-short-track	7:59.59	-	Feb 14	Boston University David Hemery Valentine Invitational
Semi	1:01:11	-	Feb 2	77th Kagawa Marugame International Half Marathon, Marugame

Discipline	Result	Wind	Date	Competitions
Semi	1:04:28	-	Oct 19	The 101st Hakone Ekiden Qualifying Meet, Showa Kinen Park, Tachikawa
5000m	13:36.91	-	Jul 20	Hokuren Distance Challenge - Chitose, Aoba Park Athletic Field, Chitose
5000m	13:47.41	-	Jun 28	Japanese U20 Championships, Denka Big Swan Stadium, Niigata
5000m	13:47.41	-	Jun 27	Japanese U20 Championships, Denka Big Swan Stadium, Niigata
5000m	13:34.09	-	Jun 1	The 9th NITTAIDAI Challenge Games
5000m	13:53.32	-	May 12	The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
5000m	13:53.32	-	May 10	The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
5000m	13:48.44	-	Apr 28	The 8th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama

Discipline	Result	Wind	Date	Competitions
5000m	14:00.85	-	Oct 13	National Sports Festival
5000m	14:00.89	-	Aug 5	Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
5000m	14:27.22	-	Aug 4	Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
5000m	14:27.22	-	Aug 3	Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
5000m	14:00.89	-	Aug 3	Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
5000m	13:55.62	-	May 4	34th Golden Games
CrossCount	27:05	-	Feb 18	44th World Athletics Cross Country Championships, Bathurst

Discipline	Result	Wind	Date	Competitions
5000m	14:03.20	-	Oct 10	77th National Sports Festival
5000m	14:03.20	-	Oct 6	77th National Sports Festival
1500m	3:54.91	-	Sep 17	55th Kinki High School Youth Inter-School Championships, Universiade Commemorative Stadium, Kobe
800m	1:56.15	-	Sep 16	55th Kinki High School Youth Inter-School Championships, Universiade Commemorative Stadium, Kobe
800m	1:57.74	-	Sep 16	55th Kinki High School Youth Inter-School Championships, Universiade Commemorative Stadium, Kobe
1500m	3:56.31	-	Aug 23	55th Kyoto Prefectural High School Ch., Municipal Nishikyogoku Stadium, Kyoto
800m	1:55.73	-	Aug 22	55th Kyoto Prefectural High School Ch., Municipal Nishikyogoku Stadium, Kyoto
800m	1:58.50	-	Aug 22	55th Kyoto Prefectural High School Ch., Municipal Nishikyogoku Stadium, Kyoto
5000m	14:21.89	-	Aug 6	Japan High School Championships, Naruto Sports Park, Tokushima

FAQ

Frequently asked questions

What is Kaisei Okada's 10 000 m personal best?

Kaisei Okada's 10 000 m personal best is 27:37.06, set on Nov 22, 2025 in Kamiyugi Park Athletic Stadium, Hachioji (JPN), #495 on the all-time list.

Which events does Kaisei Okada compete in?

Kaisei Okada competes in the 10 000 m and Half Marathon.

How did Kaisei Okada perform in 2026?

2026 season best: 28:31.56, set on Mar 28, 2026 in JSerra Catholic HS, San Juan Capistrano, CA (USA). Last competition: Sunset Tour, Jack Kemp Stadium - Occidental College, Los Angeles, CA on Jul 11, 2026, 13:19.77.

Kaisei Okada

Personal bests

Performance Charts

Season bests

2026

2025

2024

2023

2022

Honours

No medals

Frequently asked questions