II
Issei Iwasa

Issei Iwasa

JPNJPNMen
Birth dateFeb 7, 1998
Height-
Weight-

Issei Iwasa is a Japan long-distance runner, born on February 7, 1998. He competes primarily in the 5000m, 10000m and Semi.

His personal bests include 13:51.28 in the 5000m, 29:01.29 in the 10000m, 1:02:39 in the Semi, 2:14:00 in the Marathon and 48:43 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.

Key facts
Half Marathon
1:02:39
Marathon
2:14:00
2026 season best
1:07:58
Jan 25, 2026 · Osaka Half Marathon Course, Osaka (JPN)
2026 season best
Last competition
Osaka Half Marathon
Jan 25, 2026 · 1:07:58
Osaka Half Marathon
Age
28 years old

As of Sep 19, 2026: Half Marathon 1:02:39, Marathon 2:14:00, 2026 season best 1:07:58 (Jan 25, 2026, Osaka Half Marathon Course, Osaka (JPN)) · Last competition: Osaka Half Marathon, Jan 25, 2026, 1:07:58 · 28 years old

PB

Personal bests

13:51.28
29:01.29
1:02:39
2:14:00
10MilesRoa
48:43
20Kilometr
59:44

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
Semi
1:07:58-Jan 25, 2026
↓
Osaka Half Marathon
2025
5000m
14:34.68-Jun 7, 2025
↓
69th Kansai Inter-Corporate Track & Field Championships
2024
5000m
14:22.37-Jun 1, 2024
↓
68th Kansai Inter-Corporate Track & Field Championships, Yanmar Stadium Nagai, Osaka
2024
10MilesRoa
48:43-Dec 1, 2024-Kumamoto Kosa 10 mile Road Race
2023
5000m
13:51.28-Jul 5, 2023
↓
Hokuren Distance Challenge - Fukagawa
2023
10000m
30:00.74-May 12, 2023
↓
67th Kansai Inter-Corporate Track & Field Championships
2023
Semi
1:04:44-Jan 29, 2023
↓
2023 Osaka Half Marathon, Osaka Half Marathon Course, Osaka
2021
5000m
15:22.16-May 15, 2021
↓
Yanmar Stadium Nagai, Osaka (JPN)
2021
10000m
29:12.04-Nov 27, 2021
↓
Kamiyugi Park Athletic Stadium, Hachioji (JPN)
2020
5000m
13:56.08-Sep 26, 2020
↓
Yanmar Stadium Nagai, Osaka (JPN)
2020
10000m
29:01.29-Sep 19, 2020
↓
Prefectural Stadium, Kumagaya (JPN)
2019
5000m
14:00.42-Apr 6, 2019
↓
Tokyo (JPN)
2019
10000m
29:27.19-Apr 20, 2019
↓
Yokohama (JPN)
2019
Semi
1:02:39-Mar 10, 2019
↓
Tachikawa (JPN)
2018
10000m
29:45.14-Apr 21, 2018
↓
Kobe (JPN)
2018
Marathon
2:14:00-Feb 25, 2018-Tokyo Marathon
2017
10000m
29:19.54-Apr 22, 2017
↓
Yokohama (JPN)
2017
20Kilometr
59:44-Oct 14, 2017-Tachikawa (JPN)
2017
Semi
1:03:19-Mar 5, 2017
↓
-

2026

1 performance
DisciplineResultWindDateCompetitions
Semi
1:07:58-Jan 25Osaka Half Marathon

2025

1 performance
DisciplineResultWindDateCompetitions
5000m
14:34.68-Jun 769th Kansai Inter-Corporate Track & Field Championships

2021

2 performances
DisciplineResultWindDateCompetitions
10000m
29:12.04-Nov 27Long Distance Meeting, Kamiyugi Park Athletic Stadium, Hachioji
5000m
15:22.16-May 1565th Kansai Business Group Championships, Yanmar Stadium Nagai, Osaka

2020

5 performances
DisciplineResultWindDateCompetitions
10000m
29:55.48-Oct 11Night Game Trial, Yashima Rexxam Field, Takamatsu
5000m
13:56.08-Sep 2664th Kansai Business Group Championship, Yanmar Stadium Nagai, Osaka
10000m
29:01.29-Sep 1968th All Japan Corporate Teams Championships, Prefectural Stadium, Kumagaya
10000m
30:05.77-Jul 8Hokuren Distance Challenge, Athletics Stadium, Fukagawa
5000m
14:25.80-Jul 4Hokuren Distance Challenge, Athletics Stadium, Shibetsu

2019

4 performances
DisciplineResultWindDateCompetitions
5000m
14:44.13-May 26Kanto District Collegiate Championships, Sagamihara - Division 2
10000m
29:27.19-Apr 20269th Nittaidai Distance Meet, Yokohama
5000m
14:00.42-Apr 61st Setagaya Competition, Tokyo
Semi
1:02:39-Mar 10Japan Univ. Half Marathon Ch., Tachikawa

2018

3 performances
DisciplineResultWindDateCompetitions
10000m
30:04.35-May 24Sagamihara Kanto District Collegiate Championships, Sagamihara - Division 2
10000m
29:45.14-Apr 21Kobe Hyogo Relays, Kobe
Marathon
2:14:00-Feb 25Tokyo Marathon

2017

4 performances
DisciplineResultWindDateCompetitions
20Kilometr
59:44-Oct 14Tachikawa 20 km, Tachikawa
10000m
29:48.60-May 25Yokohama Kanto District Collegiate Championships, Yokohama
10000m
29:19.54-Apr 22Yokohama Nittai University Time Trials, Yokohama
Semi
1:03:19-Mar 5Tachikawa Japanese Univ. Half Marathon Ch., Tachikawa

Honours

No medals

FAQ

Frequently asked questions

What is Issei Iwasa's Half Marathon personal best?

Issei Iwasa's Half Marathon personal best is 1:02:39, set on Mar 10, 2019 in Tachikawa (JPN).

Which events does Issei Iwasa compete in?

Issei Iwasa competes in the Half Marathon and Marathon.

How did Issei Iwasa perform in 2026?

2026 season best: 1:07:58, set on Jan 25, 2026 in Osaka Half Marathon Course, Osaka (JPN). Last competition: Osaka Half Marathon on Jan 25, 2026, 1:07:58.