TI
Tadashi Isshiki
JPNMenBirth dateJun 5, 1994
Height-
Weight-
Tadashi Isshiki is a Japan long-distance runner, born on June 5, 1994. He competes primarily in the 5000m, 10000m and Semi.
His personal bests include 13:39.65 in the 5000m, 28:22.10 in the 10000m, 1:01:50 in the Semi and 2:07:39 in the Marathon. He has earned 1 silver medal in major international competitions. He is currently active on the international athletics circuit, representing Japan.
Key facts
Half Marathon
1:01:50
Last competition
70th Kansai Inter-Corporate Track & Field Championships
May 23, 2026 · 14:44.42
Age
32 years old
As of Sep 19, 2026: Marathon 2:07:39 (#632 all-time), Half Marathon 1:01:50, 2026 season best 2:17:09 (Mar 1, 2026, Tokyo (JPN)) · Last competition: 70th Kansai Inter-Corporate Track & Field Championships, May 23, 2026, 14:44.42 · 32 years old
PB
Personal bests
Performance Charts
Season bests
| Season | Discipline | Result | Wind | Date | Trend | Competitions |
|---|---|---|---|---|---|---|
| 2026 | 5000m | 14:44.42 | - | May 23, 2026 | ↓ | 70th Kansai Inter-Corporate Track & Field Championships |
| 2026 | 10000m | 29:43.88 | - | Apr 18, 2026 | ↓ | 1st Kansai Distance Challenge Kansai Inter-Corporate Track & Field Championships |
| 2026 | Semi | 1:03:39 | - | Feb 1, 2026 | ↓ | 78th Kagawa Marugame International Half Marathon |
| 2026 | Marathon | 2:17:09 | - | Mar 1, 2026 | ↓ | Tokyo Marathon |
| 2025 | 10000m | 29:23.65 | - | Apr 27, 2025 | ↓ | 69th Kansai Inter-Corporate Track & Field Championships |
| 2024 | 5000m | 14:00.46 | - | Nov 30, 2024 | ↓ | 13th NITTAIDAI Challenge Games |
| 2024 | Semi | 1:02:25 | - | Feb 4, 2024 | ↓ | 76th Kagawa Marugame International Half Marathon |
| 2024 | Marathon | 2:13:35 | - | Feb 25, 2024 | ↓ | Osaka Marathon |
| 2023 | 5000m | 14:09.36 | - | Jul 15, 2023 | ↓ | Hokuren Distance Challenge - Chitose |
| 2022 | 5000m | 13:45.09 | - | May 4, 2022 | ↓ | 33rd Golden Games |
| 2022 | 10000m | 28:36.93 | - | Jun 4, 2022 | ↓ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2022 | Marathon | 2:09:32 | - | Feb 27, 2022 | ↓ | The Combined 10th Osaka Marathon and 77th Lake Biwa Mainichi Marathon |
| 2021 | 5000m | 13:47.94 | - | Jul 3, 2021 | ↓ | Athletics Stadium, Shibetsu (JPN) |
| 2021 | 10000m | 28:22.10 | - | May 15, 2021 | ↓ | Prefectural Stadium, Kumagaya (JPN) |
| 2020 | 5000m | 13:45.22 | - | Jul 15, 2020 | ↓ | Athletic Track, Abashiri (JPN) |
| 2020 | 10000m | 28:09.23 | - | Nov 21, 2020 | ↓ | - |
| 2020 | Semi | 1:01:50 | - | Feb 2, 2020 | ↓ | Kagawa Marugame International Half Marathon |
| 2020 | Marathon | 2:07:39 | - | Mar 1, 2020 | ↓ | Tokyo Marathon |
| 2019 | 10000m | 28:40.08 | - | Nov 23, 2019 | ↓ | Hosei University Stadium, Machida (JPN) |
| 2019 | Semi | 1:02:15 | - | Feb 3, 2019 | ↓ | Kagawa Marugame International Half Marathon |
| 2019 | Marathon | 2:11:23 | - | Apr 28, 2019 | ↓ | Haspa Marathon Hamburg |
| 2018 | 5000m | 14:01.99 | - | May 5, 2018 | ↓ | Nobeoka (JPN) |
| 2018 | Semi | 1:06:37 | - | May 19, 2018 | ↓ | Göteborg Half Marathon |
| 2018 | Marathon | 2:09:43 | - | Feb 25, 2018 | ↓ | Tokyo Marathon |
| 2017 | 5000m | 13:58.06 | - | Jul 9, 2017 | ↓ | Kitami (JPN) |
| 2017 | 10000m | 28:54.67 | - | Nov 11, 2017 | ↓ | Yokohama (JPN) |
| 2017 | Semi | 1:02:58 | - | Feb 5, 2017 | ↓ | Yokohama (JPN) |
| 2017 | Marathon | 2:15:43 | - | Dec 17, 2017 | ↓ | Hofu (JPN) |
| 2016 | 5000m | 13:39.65 | - | Jun 26, 2016 | ↓ | Nagoya (JPN) |
| 2016 | 10000m | 28:36.51 | - | Nov 26, 2016 | ↓ | Yamaguchi (JPN) |
| 2016 | Semi | 1:03:03 | - | Feb 7, 2016 | ↓ | Kanagawa (JPN) |
| 2016 | Marathon | 2:11:45 | - | Feb 28, 2016 | ↓ | Tokyo (JPN) |
| 2015 | 5000m | 13:40.93 | - | Sep 12, 2015 | ↓ | Osaka (JPN) |
| 2015 | 10000m | 28:35.55 | - | Nov 21, 2015 | ↓ | Kanagawa (JPN) |
| 2015 | Semi | 1:02:09 | - | Feb 1, 2015 | ↓ | Marugame (JPN) |
| 2014 | 5000m | 14:19.40 | - | Apr 5, 2014 | ↓ | Kumamoto (JPN) |
| 2014 | 10000m | 28:23.40 | - | Jul 6, 2014 | ↓ | Abashiri (JPN) |
| 2014 | Semi | 1:03:01 | - | Feb 2, 2014 | ↓ | Kanagawa (JPN) |
| 2013 | 5000m | 13:59.07 | - | Sep 29, 2013 | ↓ | Yokohama (JPN) |
| 2013 | CrossCount | 23:17 | - | Mar 24, 2013 | - | 40th IAAF World Cross Country Championships, Myslecinek Park, Bydgoszcz |
| 2012 | 5000m | 14:02.46 | - | Jun 9, 2012 | ↓ | Yokohama (JPN) |
| 2011 | 5000m | 14:22.21 | - | Aug 7, 2011 | ↓ | Iwate (JPN) |
2026
4 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:44.42 | - | May 23 | 70th Kansai Inter-Corporate Track & Field Championships |
10000m | 29:43.88 | - | Apr 18 | 1st Kansai Distance Challenge Kansai Inter-Corporate Track & Field Championships |
Marathon | 2:17:09 | - | Mar 1 | Tokyo Marathon |
Semi | 1:03:39 | - | Feb 1 | 78th Kagawa Marugame International Half Marathon |
2025
1 performance| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 29:23.65 | - | Apr 27 | 69th Kansai Inter-Corporate Track & Field Championships |
2024
4 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:00.46 | - | Nov 30 | 13th NITTAIDAI Challenge Games |
5000m | 14:19.35 | - | Jun 1 | 68th Kansai Inter-Corporate Track & Field Championships, Yanmar Stadium Nagai, Osaka |
Marathon | 2:13:35 | - | Feb 25 | Osaka Marathon |
Semi | 1:02:25 | - | Feb 4 | 76th Kagawa Marugame International Half Marathon |
2023
1 performance| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:09.36 | - | Jul 15 | Hokuren Distance Challenge - Chitose |
2022
5 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 29:28.00 | - | Nov 26 | Hachioji Long Distance Meeting, Gion Stadium, Machida |
Marathon | 2:17:57 | - | Sep 25 | BMW Berlin Marathon, Berlin |
10000m | 28:36.93 | - | Jun 4 | 296th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:45.09 | - | May 4 | 33rd Golden Games |
Marathon | 2:09:32 | - | Feb 27 | The Combined 10th Osaka Marathon and 77th Lake Biwa Mainichi Marathon |
2021
9 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:20.35 | - | Nov 14 | 292nd Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:06.17 | - | Nov 14 | 292nd Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:58.55 | - | Sep 29 | 10th Waseda University Competition, Mikio Oda Memorial Athletic Field, Tokorozawa |
5000m | 13:50.23 | - | Jul 17 | Hokuren Distance Challenge, Aoba Park Athletic Field, Chitose |
10000m | 29:00.13 | - | Jul 10 | Hokuren Distance Challenge, Athletic Track, Abashiri |
5000m | 13:47.94 | - | Jul 3 | Hokuren Distance Challenge, Athletics Stadium, Shibetsu |
10000m | 28:22.10 | - | May 15 | 63rd East Japan Business Group Championships, Prefectural Stadium, Kumagaya |
5000m | 13:50.81 | - | Apr 25 | 286th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:00.17 | - | Apr 11 | 17th Kanto Private School Six Universities vs. School Championships, Athletics Stadium, Konosu |
2020
6 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 28:09.23 | - | Nov 21 | Long Distance Meeting, Kamiyugi Park Athletic Stadium, Hachioji |
5000m | 13:56.92 | - | Sep 30 | 6th Waseda University Competition, Mikio Oda Memorial Athletic Field, Tokorozawa |
5000m | 13:45.22 | - | Jul 15 | Hokuren Distance Challenge, Athletic Track, Abashiri |
5000m | 13:50.59 | - | Jul 4 | Hokuren Distance Challenge, Athletics Stadium, Shibetsu |
Marathon | 2:07:39 | - | Mar 1 | Tokyo Marathon |
Semi | 1:01:50 | - | Feb 2 | Kagawa Marugame International Half Marathon |
2019
4 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 28:40.08 | - | Nov 23 | Hachioji Long Distance Meet, Hosei University Stadium, Machida |
Marathon | 2:11:23 | - | Apr 28 | Haspa Marathon Hamburg |
Marathon | 2:12:21 | - | Mar 3 | Tokyo Marathon, Tokyo |
Semi | 1:02:15 | - | Feb 3 | Kagawa Marugame International Half Marathon |
2018
6 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Semi | 1:03:00 | - | Dec 29 | Tokyo Year-End Half Marathon, Tokyo |
Marathon | 2:14:49 | - | Oct 28 | Frankfurt Marathon, Frankfurt |
Semi | 1:06:37 | - | May 19 | Göteborg Half Marathon |
5000m | 14:01.99 | - | May 5 | Nobeoka Golden Games, Nobeoka |
Marathon | 2:09:43 | - | Feb 25 | Tokyo Marathon |
Semi | 1:03:31 | - | Jan 14 | Kumamoto Okukuma Half Marathon, Kumamoto |
2017
8 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Marathon | 2:15:43 | - | Dec 17 | Hofu Marathon, Hofu |
10000m | 28:54.67 | - | Nov 11 | Yokohama Nittai University Distance, Yokohama |
5000m | 14:03.73 | - | Oct 21 | Saitama |
10000m | 29:11.76 | - | Jul 13 | Abashiri Hokuren Distance Challenge, Abashiri |
5000m | 13:58.06 | - | Jul 9 | Kitami Hokuren Distance Challenge, Kitami |
10000m | 29:01.59 | - | Jun 23 | Japan Championships, Osaka |
10000m | 30:10.44 | - | Apr 30 | Tokyo |
Semi | 1:02:58 | - | Feb 5 | Kanagawa Half Marathon, Kanagawa |
2016
2 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 28:36.51 | - | Nov 26 | Yamaguchi |
5000m | 13:56.99 | - | Oct 23 | Yokohama Nittai University Time Trials, Yokohama |
Showing 1 - 50 of 78
Honours
🥈
2015Universiade
Half Marathon
FAQ
Frequently asked questions
What is Tadashi Isshiki's Marathon personal best?
Tadashi Isshiki's Marathon personal best is 2:07:39, set on Mar 1, 2020 in Tokyo (JPN), #632 on the all-time list.
Which events does Tadashi Isshiki compete in?
Tadashi Isshiki competes in the Marathon and Half Marathon.
How did Tadashi Isshiki perform in 2026?
2026 season best: 2:17:09, set on Mar 1, 2026 in Tokyo (JPN). Last competition: 70th Kansai Inter-Corporate Track & Field Championships on May 23, 2026, 14:44.42.