HT

Hironori Tachizako

JPNJPNMen
Birth dateNov 18, 2005
Height-
Weight-

Hironori Tachizako is a Japan middle-distance runner, born on November 18, 2005. He competes primarily in the 800m, 1500m and 3000m.

His personal bests include 1:47.97 in the 800m, 3:42.76 in the 1500m, 8:45.72 in the 3000m, 14:58.47 in the 5000m and 31:28.79 in the 10000m. He has earned 1 gold and 1 bronze medals in major international competitions. He is currently active on the international athletics circuit, representing Japan.

Key facts
800 m
1:47.97
1500 m
3:42.76
2026 season best
1:50.22
May 5, 2026 · Edogawa Stadium, Tokyo (JPN)
2026 season best
Last competition
19th wttk & DEN-EN Club Middle Distance Record Challenge, Edogawa Stadium, Tokyo
May 5, 2026 · 1:50.22
19th wttk & DEN-EN Club Middle Distance Record Challenge, Edogawa Stadium, Tokyo
Age
20 years old

As of Sep 29, 2026: 800 m 1:47.97, 1500 m 3:42.76, 2026 season best 1:50.22 (May 5, 2026, Edogawa Stadium, Tokyo (JPN)) · Last competition: 19th wttk & DEN-EN Club Middle Distance Record Challenge, Edogawa Stadium, Tokyo, May 5, 2026, 1:50.22 · 20 years old

PB

Personal bests

1:47.97
3:42.76
3000m
8:45.72
14:58.47
31:28.79
5Kilometre
14:26

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
800m
1:50.22-May 5, 2026
↑
19th wttk & DEN-EN Club Middle Distance Record Challenge, Edogawa Stadium, Tokyo
2026
1500m
3:45.08-Apr 25, 2026
↑
21st Nittaidai Challenge Games
2025
800m
1:50.12-Apr 5, 2025
↑
The 58th Tokyo Big6 Track Field League, Keio Univ. Hiyoshi Athletics Field, Yokohama - Open Event
2025
1500m
3:42.76-Apr 12, 2025
↑
33rd Kanakuri Memorial Middle and Long Distance Invitational Meet, Egao Kenko Stadium, Kumamoto
2024
800m
1:49.73-Apr 27, 2024
↑
21st Asian U20 Athletics Championships
2024
1500m
3:45.67-Jul 6, 2024
↑
The 100th WASEDA & KEIO Athletic Meet, Keio Univ. Hiyoshi Athletics Field, Yokohama
2024
5Kilometre
14:26-Sep 29, 2024-The 5th Waseda University track and field meet
2024
10000m
31:28.79-Oct 19, 2024-6th Waseda University track and field meet Mikio Oda Memorial Athletic Field, Tokorozawa(JPN)
2023
800m
1:47.97-Oct 17, 2023
↑
National Sports Festival
2023
1500m
3:47.40-Aug 2, 2023
↑
Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
2022
800m
1:49.58-Jun 12, 2022
↑
Yanmar Stadium Nagai, Osaka (JPN)
2022
1500m
3:55.31-Mar 12, 2022
↑
Kamoike Auxiliary Stadium, Kagoshima (JPN)
2022
5000m
14:58.47-Jan 9, 2022-Prefectural Stadium, Kagoshima (JPN)
2021
800m
1:52.92-Jul 30, 2021
↑
Prefectural Stadium, Fukui (JPN)
2021
1500m
3:52.7h-Oct 8, 2021
↑
Prefectural Sports Park, Miyazaki (JPN)
2021
3000m
8:45.72-Jul 2, 2021-Prefectural Stadium, Kagoshima (JPN)

2026

3 performances

2024

21 performances
DisciplineResultWindDateCompetitions
10000m
31:28.79-Oct 196th Waseda University track and field meet Mikio Oda Memorial Athletic Field, Tokorozawa(JPN)
5Kilometre
14:26-Sep 29The 5th Waseda University track and field meet
1500m
3:47.96-Sep 2093rd Japan Inter-University Athletics Championships
1500m
3:49.72-Sep 2093rd Japan Inter-University Athletics Championships
1500m
3:47.96-Sep 1993rd Japan Inter-University Athletics Championships
1500m
3:45.67-Jul 6The 100th WASEDA & KEIO Athletic Meet, Keio Univ. Hiyoshi Athletics Field, Yokohama
800m
1:51.98-Jun 29Japanese Championships
800m
1:51.98-Jun 28Japanese Championships
800m
1:52.09-May 11The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
800m
1:53.55-May 11The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
800m
1:53.55-May 10The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
1500m
3:47.34-May 10The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
800m
1:52.09-May 10The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
1500m
3:49.08-May 10The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
1500m
3:49.08-May 9The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
800m
1:49.73-Apr 2721st Asian U20 Athletics Championships
800m
1:52.95-Apr 2621st Asian U20 Athletics Championships
800m
1:49.73-Apr 2621st Asian U20 Athletics Championships
800m
1:52.95-Apr 2521st Asian U20 Athletics Championships
800m
1:51.72-Apr 6The 57th Tokyo Big 6, Keio Univ. Hiyoshi Athletics Field, Yokohama - Open Event
1500m
3:58.82-Mar 30TOKOROZAWA Games

2023

18 performances
DisciplineResultWindDateCompetitions
800m
1:47.97-Oct 17National Sports Festival
800m
1:50.23-Oct 16National Sports Festival
800m
1:48.50-Aug 5Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:52.06-Aug 4Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:52.58-Aug 4Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:48.50-Aug 3Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
1500m
3:47.40-Aug 3Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:52.06-Aug 3Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:52.58-Aug 3Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
1500m
3:49.49-Aug 3Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
1500m
3:47.40-Aug 2Inter-High School Championships, Atsubetsu Park Stadium, Sapporo
800m
1:50.57-Jul 16French U20 Championships, Stade de la Margotière, Chateauroux
800m
1:51.72-Jul 15French U20 Championships, Stade de la Margotière, Chateauroux
800m
1:50.57-Jul 15French U20 Championships, Stade de la Margotière, Chateauroux
800m
1:49.22-Jun 520th Asian U20 Athletics Championships, Yecheon
800m
1:51.44-Jun 520th Asian U20 Athletics Championships, Yecheon
800m
1:51.44-Jun 420th Asian U20 Athletics Championships, Yecheon
800m
1:49.89-May 338th Shizuoka International Athletics Meet, Prefectural Shizuoka Stadium, Fukuroi

2022

3 performances
DisciplineResultWindDateCompetitions
800m
1:51.71-Oct 1077th National Sports Festival
800m
1:51.80-Oct 1077th National Sports Festival
800m
1:51.80-Oct 777th National Sports Festival
Showing 1 - 50 of 69

Honours

🥉

21st Asian U20 Athletics Championships

800 Metres

2024
🥇

20th Asian U20 Athletics Championships

800 Metres

2023
FAQ

Frequently asked questions

What is Hironori Tachizako's 800 m personal best?

Hironori Tachizako's 800 m personal best is 1:47.97, set on Oct 17, 2023 in Prefectural Stadium, Kagoshima (JPN).

Which events does Hironori Tachizako compete in?

Hironori Tachizako competes in the 800 m and 1500 m.

How did Hironori Tachizako perform in 2026?

2026 season best: 1:50.22, set on May 5, 2026 in Edogawa Stadium, Tokyo (JPN). Last competition: 19th wttk & DEN-EN Club Middle Distance Record Challenge, Edogawa Stadium, Tokyo on May 5, 2026, 1:50.22.