KS

Keita Seguchi

Keita Seguchi

JPNMen

Birth dateMay 3, 1988

Height-

Weight-

Keita Seguchi is a Japan long-distance runner, born on May 3, 1988. He competes primarily in the 3000m, 10000m and Semi.

His personal bests include 8:44.43 in the 3000m, 29:22.28 in the 10000m, 1:05:11 in the Semi, 2:16:01 in the Marathon and 49:25 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.

Key facts

20 Kilometres Road

1:00:21

Marathon

2:16:01

2026 season best

1:08:42

Apr 26, 2026 · Gifu (JPN)

2026 season best

Last competition

Gifu Half Marathon

Apr 26, 2026 · 1:08:42

Gifu Half Marathon

Age

38 years old

As of Sep 24, 2026: 20 Kilometres Road 1:00:21, Marathon 2:16:01, 2026 season best 1:08:42 (Apr 26, 2026, Gifu (JPN)) · Last competition: Gifu Half Marathon, Apr 26, 2026, 1:08:42 · 38 years old

PB

Personal bests

3000m

8:44.43

29:22.28

1:05:11

2:16:01

10MilesRoa

49:25

20Kilometr

1:00:21

30Kilometr

1:35:30

Performance Charts

Season bests

Season	Discipline	Result	Wind	Date	Trend	Competitions
2026	Semi	1:08:42	-	Apr 26, 2026	↓	Gifu Half Marathon
2026	Marathon	2:37:47	-	Mar 1, 2026	↓	Tokyo Marathon
2025	Semi	1:08:35	-	Jan 26, 2025	↓	Osaka Half Marathon
2025	Marathon	2:22:04	-	Mar 2, 2025	↓	Tokyo Marathon
2024	Marathon	2:27:26	-	Nov 17, 2024	↓	Kobe Marathon
2023	Semi	1:06:38	-	Jan 29, 2023	↓	2023 Osaka Half Marathon, Osaka Half Marathon Course, Osaka
2023	Marathon	2:16:01	-	Mar 5, 2023	↓	Tokyo Marathon
2022	3000m	8:44.43	-	Jun 19, 2022	-	Memorial Park Stadium, Amagasaki (JPN)
2022	Semi	1:07:02	-	Jan 30, 2022	↓	Osaka (JPN)
2022	Marathon	2:17:35	-	Mar 6, 2022	↓	Tokyo Marathon
2021	10000m	30:44.29	-	May 14, 2021	↓	Yanmar Stadium Nagai, Osaka (JPN)
2021	Semi	1:06:04	-	Feb 14, 2021	↓	Yamaguchi (JPN)
2021	Marathon	2:16:25	-	Feb 28, 2021	↓	The 76th Lake Biwa Mainichi Marathon
2020	Marathon	2:19:07	-	Dec 20, 2020	↓	Hofu (JPN)
2019	Marathon	2:21:37	-	Dec 1, 2019	↓	The 73rd Fukuoka International Open Marathon Championships, Fukuoka
2018	Marathon	2:33:58	-	Nov 25, 2018	↓	Osaka (JPN)
2017	Marathon	2:30:09	-	Feb 5, 2017	↓	Oita (JPN)
2015	Marathon	2:34:32	-	Feb 1, 2015	↓	Oita (JPN)
2014	Marathon	2:22:22	-	Apr 20, 2014	↓	Nagano (JPN)
2013	30Kilometr	1:35:30	-	Feb 17, 2013	↑	Tokyo (JPN)
2012	10MilesRoa	49:25	-	Feb 12, 2012	-	Karatsu (JPN)
2010	10000m	29:22.28	-	Oct 23, 2010	↓	Yokohama (JPN)
2010	Semi	1:05:11	-	May 23, 2010	↓	Tokyo (JPN)
2009	20Kilometr	1:00:21	-	Oct 17, 2009	-	Tachikawa (JPN)
2008	30Kilometr	1:35:58	-	Feb 24, 2008	↑	Kumamoto (JPN)

2026

2 performances

Discipline	Result	Wind	Date	Competitions
Semi	1:08:42	-	Apr 26	Gifu Half Marathon
Marathon	2:37:47	-	Mar 1	Tokyo Marathon

2025

4 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:23:24	-	Dec 7	Fukuoka International Marathon, Fukuoka
Marathon	2:28:23	-	Nov 16	Kobe Marathon
Marathon	2:22:04	-	Mar 2	Tokyo Marathon
Semi	1:08:35	-	Jan 26	Osaka Half Marathon

2024

2 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:35:51	-	Dec 1	Fukuoka International Marathon, Fukuoka
Marathon	2:27:26	-	Nov 17	Kobe Marathon

2023

3 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:30:51	-	Nov 19	Kobe Marathon
Marathon	2:16:01	-	Mar 5	Tokyo Marathon
Semi	1:06:38	-	Jan 29	2023 Osaka Half Marathon, Osaka Half Marathon Course, Osaka

2022

7 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:22:11	-	Dec 4	Fukuoka International Marathon
Semi	1:07:15	-	Oct 16	Tokyo Legacy Half Marathon, Tokyo
Marathon	2:29:02	-	Aug 28	Hokkaido Marathon, Sapporo
3000m	8:44.43	-	Jun 19	2022 Kansai Inter-Corporate Track & Field Record Meeting, Memorial Park Stadium, Amagasaki
Marathon	2:17:35	-	Mar 6	Tokyo Marathon
Semi	1:07:40	-	Feb 13	Yamaguchi All-Corporate Half Marathon Ch., Yamaguchi
Semi	1:07:02	-	Jan 30	Osaka Half Marathon, Osaka

2021

6 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:21:39	-	Dec 5	The 75th Fukuoka International Open Marathon Championships, Fukuoka
10000m	32:27.07	-	Oct 16	2nd Long-distance Record Meeting, Kashihara Park Athletic Field, Kashihara
10000m	30:50.69	-	Aug 28	89th Kinki Ch., Konoike Athletics Stadium, Nara
10000m	30:44.29	-	May 14	65th Kansai Business Group Championships, Yanmar Stadium Nagai, Osaka
Marathon	2:16:25	-	Feb 28	The 76th Lake Biwa Mainichi Marathon
Semi	1:06:04	-	Feb 14	All Japan Corporate Team Half Marathon Ch., Yamaguchi

2020

2 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:19:07	-	Dec 20	Hofu Yumiuri Marathon, Hofu
Marathon	2:28:51	-	Mar 8	The 75th Lake Biwa Mainichi Marathon, Otsu

2019

2 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:21:37	-	Dec 1	The 73rd Fukuoka International Open Marathon Championships, Fukuoka
Marathon	2:34:27	-	Mar 10	Lake Biwa Marathon

2018

1 performance

Discipline	Result	Wind	Date	Competitions
Marathon	2:33:58	-	Nov 25	Osaka Marathon, Osaka

2017

2 performances

Discipline	Result	Wind	Date	Competitions
Marathon	2:34:47	-	Dec 3	Fukuoka Marathon, Fukuoka
Marathon	2:30:09	-	Feb 5	Beppu-Oita Mainichi Marathon, Oita

2015

1 performance

Discipline	Result	Wind	Date	Competitions
Marathon	2:34:32	-	Feb 1	Beppu-Oita Mainichi Marathon, Oita

2014

1 performance

Discipline	Result	Wind	Date	Competitions
Marathon	2:22:22	-	Apr 20	Nagano Commemorative Marathon, Nagano

2013

1 performance

Discipline	Result	Wind	Date	Competitions
30Kilometr	1:35:30	-	Feb 17	Tokyo Ohme-Hochi Road Race, Tokyo

2012

1 performance

Discipline	Result	Wind	Date	Competitions
10MilesRoa	49:25	-	Feb 12	Karatsu 10-Miler, Karatsu

2010

3 performances

Discipline	Result	Wind	Date	Competitions
Semi	1:05:34	-	Nov 21	Ageo City Half Marathon, Ageo
10000m	29:22.28	-	Oct 23	Yokohama Nittai University Distance Meet, Yokohama
Semi	1:05:11	-	May 23	Tokyo Kanto Regional Championships, Tokyo

2009

1 performance

Discipline	Result	Wind	Date	Competitions
20Kilometr	1:00:21	-	Oct 17	Tachikawa Hakone Ekiden Qualifying Race 20km, Tachikawa

2008

1 performance

Discipline	Result	Wind	Date	Competitions
30Kilometr	1:35:58	-	Feb 24	Kumamoto Kumanichi 30K, Kumamoto

FAQ

Frequently asked questions

What is Keita Seguchi's 20 Kilometres Road personal best?

Keita Seguchi's 20 Kilometres Road personal best is 1:00:21, set on Oct 17, 2009 in Tachikawa (JPN).

Which events does Keita Seguchi compete in?

Keita Seguchi competes in the 20 Kilometres Road and Marathon.

How did Keita Seguchi perform in 2026?

2026 season best: 1:08:42, set on Apr 26, 2026 in Gifu (JPN). Last competition: Gifu Half Marathon on Apr 26, 2026, 1:08:42.