KY
Koki Yoshioka
JPNMenBirth dateJan 6, 1998
Height-
Weight-
Koki Yoshioka is a Japan long-distance runner, born on January 6, 1998. He competes primarily in the 5000m, 10000m and Semi.
His personal bests include 13:46.89 in the 5000m, 28:34.66 in the 10000m, 1:01:40 in the Semi, 2:07:28 in the Marathon and 46:55 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.
Key facts
Half Marathon
1:01:40
Last competition
HOKUREN Distance Challenge in ABASHIRI
Jul 8, 2026 · 28:56.11
Age
28 years old
As of Sep 12, 2026: Marathon 2:07:28 (#574 all-time), Half Marathon 1:01:40, 2026 season best 2:08:51 (Feb 22, 2026, Osaka (JPN)) · Last competition: HOKUREN Distance Challenge in ABASHIRI, Jul 8, 2026, 28:56.11 · 28 years old
PB
Personal bests
Performance Charts
Season bests
| Season | Discipline | Result | Wind | Date | Trend | Competitions |
|---|---|---|---|---|---|---|
| 2026 | 10000m | 28:56.11 | - | Jul 8, 2026 | ↓ | HOKUREN Distance Challenge in ABASHIRI |
| 2026 | Semi | 1:01:58 | - | Apr 26, 2026 | ↑ | Gifu Half Marathon |
| 2026 | Marathon | 2:08:51 | - | Feb 22, 2026 | ↑ | Osaka Marathon |
| 2025 | 5000m | 13:56.81 | - | May 4, 2025 | ↑ | 36th Golden Games in Nobeoka |
| 2025 | 10000m | 29:34.02 | - | May 17, 2025 | ↓ | 68th Kyushu Corporate Athletics Championships, Honjo Athletic Stadium, Kitakyushu |
| 2025 | Marathon | 2:13:47 | - | Mar 2, 2025 | ↑ | Tokyo Marathon |
| 2024 | Semi | 1:01:44 | - | Jan 28, 2024 | ↑ | Osaka Half Marathon, Osaka |
| 2024 | Marathon | 2:10:42 | - | Feb 25, 2024 | ↑ | Osaka Marathon |
| 2023 | 10000m | 28:41.76 | - | May 13, 2023 | ↓ | 67th Central Japan Corporate Teams Athletics Championships |
| 2023 | Semi | 1:01:40 | - | Jan 29, 2023 | ↑ | 2023 Osaka Half Marathon, Osaka Half Marathon Course, Osaka |
| 2023 | Marathon | 2:07:28 | - | Feb 26, 2023 | ↑ | Osaka Marathon |
| 2022 | 5000m | 14:14.89 | - | Jul 9, 2022 | ↑ | Municipal Stadium, Kitami (JPN) |
| 2022 | 10000m | 29:57.57 | - | Oct 8, 2022 | ↓ | Hoshigadai Stadium, Tajimi (JPN) |
| 2022 | 10MilesRoa | 46:55 | - | Dec 4, 2022 | - | Kosa (JPN) |
| 2021 | 5000m | 14:06.46 | - | Apr 17, 2021 | ↑ | Chukyo Univ. Stadium, Toyota (JPN) |
| 2021 | 10000m | 29:09.00 | - | Dec 4, 2021 | ↓ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2021 | Semi | 1:03:15 | - | Feb 14, 2021 | ↑ | Yamaguchi (JPN) |
| 2021 | Marathon | 2:18:09 | - | Sep 12, 2021 | ↑ | Vienna City Marathon |
| 2020 | 5000m | 13:47.72 | - | Sep 20, 2020 | ↑ | Prefectural Stadium, Kumagaya (JPN) |
| 2020 | 10000m | 28:34.66 | - | Sep 19, 2020 | ↓ | Prefectural Stadium, Kumagaya (JPN) |
| 2020 | Semi | 1:01:42 | - | Feb 9, 2020 | ↑ | All-Japan Corporate Team Half Marathon Championships |
| 2020 | Marathon | 2:10:13 | - | Mar 8, 2020 | ↑ | The 75th Lake Biwa Mainichi Marathon, Otsu |
| 2019 | 5000m | 13:46.89 | - | Oct 6, 2019 | ↑ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2019 | 10000m | 28:48.17 | - | Nov 23, 2019 | ↓ | Hosei University Stadium, Machida (JPN) |
| 2019 | Semi | 1:04:03 | - | Apr 28, 2019 | ↑ | Seiryu Half Marathon |
| 2018 | Semi | 1:03:32 | - | Oct 13, 2018 | ↑ | Tachikawa (JPN) |
| 2017 | Semi | 1:05:25 | - | Oct 1, 2017 | ↑ | - |
| 2016 | Semi | 1:06:59 | - | Feb 7, 2016 | ↑ | Kanagawa (JPN) |
| 2014 | 5000m | 14:39.89 | - | Apr 5, 2014 | ↑ | Kumamoto (JPN) |
2026
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 28:56.11 | - | Jul 8 | HOKUREN Distance Challenge in ABASHIRI |
Semi | 1:01:58 | - | Apr 26 | Gifu Half Marathon |
Marathon | 2:08:51 | - | Feb 22 | Osaka Marathon |
2025
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 29:34.02 | - | May 17 | 68th Kyushu Corporate Athletics Championships, Honjo Athletic Stadium, Kitakyushu |
5000m | 13:56.81 | - | May 4 | 36th Golden Games in Nobeoka |
Marathon | 2:13:47 | - | Mar 2 | Tokyo Marathon |
2024
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Marathon | DNF | - | Dec 1 | Fukuoka International Marathon, Fukuoka |
Marathon | 2:10:42 | - | Feb 25 | Osaka Marathon |
Semi | 1:01:44 | - | Jan 28 | Osaka Half Marathon, Osaka |
2023
6 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Marathon | 2:15:29 | - | Oct 15 | Marathon Grand Championship - Paris 24 Selection Race, Tokyo |
Marathon | 2:15:39 | - | Jul 2 | Gold Coast Marathon, Gold Coast |
10000m | 28:41.76 | - | May 14 | 67th Central Japan Corporate Teams Athletics Championships |
10000m | 28:41.76 | - | May 13 | 67th Central Japan Corporate Teams Athletics Championships |
Marathon | 2:07:28 | - | Feb 26 | Osaka Marathon |
Semi | 1:01:40 | - | Jan 29 | 2023 Osaka Half Marathon, Osaka Half Marathon Course, Osaka |
2022
4 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10MilesRoa | 46:55 | - | Dec 4 | Kumamoto Kosa 10-Mile Road Race, Kosa |
10000m | 29:57.57 | - | Oct 8 | 23rd Chubu Business Group Championships, Hoshigadai Stadium, Tajimi |
5000m | 14:31.76 | - | Sep 17 | 5th Chukyo University Saturday Competition, Chukyo Univ. Stadium, Toyota |
5000m | 14:14.89 | - | Jul 9 | Hokuren Distance Challenge, Municipal Stadium, Kitami |
2021
11 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:26.69 | - | Dec 5 | 293th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
10000m | 29:09.00 | - | Dec 4 | 293th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
10000m | 29:21.45 | - | Nov 27 | Long Distance Meeting, Kamiyugi Park Athletic Stadium, Hachioji |
10000m | 29:37.08 | - | Oct 8 | 22nd Chubu Business Group Championships, Tajimi |
Marathon | 2:18:09 | - | Sep 12 | Vienna City Marathon |
5000m | 14:34.42 | - | Jul 14 | Hokuren Distance Challenge, Municipal Stadium, Kitami |
10000m | 30:23.35 | - | May 15 | 65th Chubu Business Group Competition, Nagaragawa Stadium, Gifu |
10000m | 29:19.19 | - | Apr 24 | 69th Hyogo Relay Carnival, Universiade Commemorative Stadium, Kobe - Asics Challenge |
5000m | 14:06.46 | - | Apr 17 | 1st Chukyo University Saturday Competition, Chukyo Univ. Stadium, Toyota |
Marathon | DNF | - | Feb 28 | The 76th Lake Biwa Mainichi Marathon |
Semi | 1:03:15 | - | Feb 14 | All Japan Corporate Team Half Marathon Ch., Yamaguchi |
2020
8 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Marathon | 2:10:13 | - | Dec 6 | The 74th Fukuoka International Open Marathon Championships, Fukuoka |
10000m | 28:57.96 | - | Oct 9 | Chubu Area Corporate Teams Championships, Tajimi |
5000m | 14:22.85 | - | Sep 26 | 3rd Chukyo University Saturday Competition, Chukyo Univ. Stadium, Toyota |
5000m | 13:47.72 | - | Sep 20 | 68th All Japan Corporate Teams Championships, Prefectural Stadium, Kumagaya |
10000m | 28:34.66 | - | Sep 19 | 68th All Japan Corporate Teams Championships, Prefectural Stadium, Kumagaya |
5000m | 14:13.11 | - | Jul 4 | Hokuren Distance Challenge, Athletics Stadium, Shibetsu |
Marathon | 2:10:13 | - | Mar 8 | The 75th Lake Biwa Mainichi Marathon, Otsu |
Semi | 1:01:42 | - | Feb 9 | All-Japan Corporate Team Half Marathon Championships |
2019
6 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 28:48.17 | - | Nov 23 | Hachioji Long Distance Meet, Hosei University Stadium, Machida |
5000m | 13:46.89 | - | Oct 6 | 273rd Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:33.39 | - | May 12 | 63nd Chubu District Corporate Teams Championships, Gifu |
10000m | 30:02.48 | - | May 11 | 63nd Chubu District Corporate Teams Championships, Gifu |
Semi | 1:04:03 | - | Apr 28 | Seiryu Half Marathon |
10000m | 30:49.24 | - | Apr 20 | 269th Nittaidai Distance Meet, Yokohama |
2018
2 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Semi | 1:03:32 | - | Oct 13 | Tachikawa Half Marathon, Tachikawa |
Semi | 1:05:50 | - | Jan 14 | Kumamoto Okukuma Half Marathon, Kumamoto |
2017
1 performance| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Semi | 1:05:25 | - | Oct 1 | Sapporo Half Marathon, Sapporo |
2016
1 performance| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
Semi | 1:06:59 | - | Feb 7 | Kanagawa Half Marathon, Kanagawa |
2014
1 performance| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:39.89 | - | Apr 5 | Kumamoto Kanaguri Memorial, Kumamoto - High School Events |
Honours
No medals
FAQ
Frequently asked questions
What is Koki Yoshioka's Marathon personal best?
Koki Yoshioka's Marathon personal best is 2:07:28, set on Feb 26, 2023 in Osaka (JPN), #574 on the all-time list.
Which events does Koki Yoshioka compete in?
Koki Yoshioka competes in the Marathon and Half Marathon.
How did Koki Yoshioka perform in 2026?
2026 season best: 2:08:51, set on Feb 22, 2026 in Osaka (JPN). Last competition: HOKUREN Distance Challenge in ABASHIRI on Jul 8, 2026, 28:56.11.