AK
Aritaka Kajiwara
JPNMenBirth dateJun 16, 1988
Height-
Weight-
Aritaka Kajiwara is a Japan middle-distance runner, born on June 16, 1988. He competes primarily in the 1500m, 3000m and 5000m.
His personal bests include 3:49.00 in the 1500m, 8:02.88 in the 3000m, 13:30.56 in the 5000m, 28:08.21 in the 10000m and 1:01:48 in the Semi. He is currently active on the international athletics circuit, representing Japan.
Key facts
10 000 m
28:08.21
Half Marathon
1:01:48
Last competition
18th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama
Nov 16, 2025 · 14:24.73
Age
38 years old
As of Sep 15, 2026: 10 000 m 28:08.21, Half Marathon 1:01:48, 2025 season best 14:00.77 (May 4, 2025, Nishishina Athletic Stadium, Nobeoka (JPN)) · Last competition: 18th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama, Nov 16, 2025, 14:24.73 · 38 years old
PB
Personal bests
3:49.00
8:02.88
13:30.56
28:08.21
1:01:48
2:14:27
14:55
46:36
59:52
Performance Charts
Season bests
| Season | Discipline | Result | Wind | Date | Trend | Competitions |
|---|---|---|---|---|---|---|
| 2025 | 5000m | 14:00.77 | - | May 4, 2025 | ↑ | 36th Golden Games in Nobeoka |
| 2024 | 5000m | 13:59.82 | - | May 19, 2024 | ↑ | 66th East Japan Corporate Athletics Championships |
| 2024 | 5Kilometre | 14:55 | - | Mar 31, 2024 | - | Fukui Sakura Marathon 5K |
| 2024 | 10000m | 30:40.93 | - | Nov 23, 2024 | ↓ | 2024 Hachioji Long Distance |
| 2023 | 5000m | 13:30.56 | - | May 4, 2023 | ↑ | 34th Golden Games |
| 2023 | 10000m | 28:08.21 | - | Nov 11, 2023 | ↓ | 5th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama |
| 2022 | 5000m | 13:38.43 | - | Jul 16, 2022 | ↑ | Aoba Park Athletic Field, Chitose (JPN) |
| 2022 | 10000m | 28:46.79 | - | Oct 1, 2022 | ↓ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2022 | Semi | 1:01:48 | - | Jan 30, 2022 | ↑ | Osaka (JPN) |
| 2021 | 3000m | 8:02.88 | - | Apr 3, 2021 | - | Komazawa Olympic Park Athletic Stadium, Tokyo (JPN) |
| 2021 | 5000m | 13:39.86 | - | Nov 14, 2021 | ↑ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2021 | 10000m | 28:14.15 | - | Dec 4, 2021 | ↓ | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2020 | 1500m | 3:51.4h | - | Sep 14, 2020 | ↓ | Yoyogi Park Athletic Track, Tokyo (JPN) |
| 2020 | 5000m | 13:35.24 | - | Dec 4, 2020 | ↑ | 104th Japan Championships |
| 2020 | 10000m | 28:35.62 | - | Nov 21, 2020 | ↓ | Kamiyugi Park Athletic Stadium, Hachioji (JPN) |
| 2019 | 10000m | 29:07.87 | - | Nov 23, 2019 | ↓ | Hosei University Stadium, Machida (JPN) |
| 2019 | Semi | 1:04:57 | - | Feb 3, 2019 | ↑ | - |
| 2018 | 5000m | 13:55.75 | - | May 5, 2018 | ↑ | Nobeoka (JPN) |
| 2018 | 10000m | 28:43.13 | - | Apr 21, 2018 | ↓ | Yokohama (JPN) |
| 2018 | Semi | 1:03:55 | - | Feb 25, 2018 | ↑ | - |
| 2017 | 5000m | 13:58.94 | - | Apr 1, 2017 | ↑ | Kumamoto (JPN) |
| 2017 | 10000m | 28:44.37 | - | Dec 2, 2017 | ↓ | Yokohama (JPN) |
| 2017 | Semi | 1:03:05 | - | Feb 5, 2017 | ↑ | Yokohama (JPN) |
| 2017 | Marathon | 2:21:18 | - | Mar 5, 2017 | ↓ | Otsu (JPN) |
| 2016 | 5000m | 13:49.66 | - | Jun 26, 2016 | ↑ | Nagoya (JPN) |
| 2016 | 20Kilometr | 59:52 | - | Oct 16, 2016 | ↑ | Tokyo (JPN) |
| 2016 | Semi | 1:02:45 | - | Jan 10, 2016 | ↑ | Tochigi (JPN) |
| 2016 | Marathon | 2:14:27 | - | Dec 4, 2016 | ↓ | Fukuoka (JPN) |
| 2015 | 5000m | 13:38.72 | - | Dec 6, 2015 | ↑ | Yokohama (JPN) |
| 2015 | 10000m | 28:13.42 | - | Nov 14, 2015 | ↓ | Yokohama (JPN) |
| 2014 | 1500m | 3:49.00 | - | Jul 12, 2014 | ↓ | Kortrijk (BEL) |
| 2014 | 5000m | 13:39.47 | - | May 10, 2014 | ↑ | Nobeoka (JPN) |
| 2014 | 10000m | 28:54.34 | - | Apr 20, 2014 | ↓ | Kobe (JPN) |
| 2014 | 10MilesRoa | 46:36 | - | Dec 7, 2014 | - | Kosa (JPN) |
| 2014 | Marathon | 2:18:58 | - | Feb 23, 2014 | ↓ | Tokyo (JPN) |
| 2013 | 5000m | 13:36.79 | - | Sep 29, 2013 | ↑ | Yokohama (JPN) |
| 2013 | 10000m | 28:22.18 | - | Dec 1, 2013 | ↓ | Hachioji (JPN) |
| 2013 | Semi | 1:02:37 | - | Nov 17, 2013 | ↑ | Ageo (JPN) |
| 2013 | Marathon | 2:18:01 | - | Mar 3, 2013 | ↓ | Otsu (JPN) |
| 2012 | 5000m | 13:58.80 | - | Nov 18, 2012 | ↑ | Yokohama (JPN) |
| 2012 | 10000m | 28:35.25 | - | Dec 1, 2012 | ↓ | Yokohama (JPN) |
| 2011 | 5000m | 14:07.81 | - | May 1, 2011 | ↑ | Yokohama (JPN) |
| 2011 | 10000m | 29:04.88 | - | Nov 23, 2011 | ↓ | Tokyo (JPN) |
| 2011 | 20Kilometr | 1:00:49 | - | Oct 15, 2011 | ↑ | Tachikawa (JPN) |
| 2010 | 10000m | 29:15.51 | - | Nov 27, 2010 | ↓ | Tokyo (JPN) |
| 2010 | 20Kilometr | 1:01:04 | - | Oct 16, 2010 | ↑ | Tachikawa (JPN) |
| 2009 | 20Kilometr | 1:00:34 | - | Oct 17, 2009 | ↑ | Tachikawa (JPN) |
| 2008 | 20Kilometr | 1:01:28 | - | Oct 18, 2008 | ↑ | Tachikawa (JPN) |
2025
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:24.73 | - | Nov 16 | 18th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:06.10 | - | Jun 15 | 16th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:00.77 | - | May 4 | 36th Golden Games in Nobeoka |
2024
4 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 30:40.93 | - | Nov 23 | 2024 Hachioji Long Distance |
5000m | 13:59.82 | - | May 19 | 66th East Japan Corporate Athletics Championships |
5000m | 13:59.82 | - | May 18 | 66th East Japan Corporate Athletics Championships |
5Kilometre | 14:55 | - | Mar 31 | Fukui Sakura Marathon 5K |
2023
9 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | DNF | - | Dec 10 | Japan 10,000m Championships, National Stadium, Tokyo |
5000m | 13:44.26 | - | Dec 2 | 7th NITTAIDAI Challenge Games |
10000m | 28:29.82 | - | Nov 25 | Hachioji Long Distance |
10000m | 28:08.21 | - | Nov 11 | 5th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama |
10000m | 28:54.86 | - | Sep 23 | The 4th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:17.25 | - | Jul 15 | Night of Athletics |
10000m | 28:39.61 | - | Jul 5 | Hokuren Distance Challenge - Fukagawa |
5000m | 13:40.50 | - | Jun 1 | Japanese Championships, Yanmar Stadium Nagai, Osaka |
5000m | 13:30.56 | - | May 4 | 34th Golden Games |
2022
9 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:06.74 | - | Oct 22 | 99th Heisei International University Long Distance Competition, Athletics Stadium, Konosu |
10000m | 28:46.79 | - | Oct 1 | 299th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:57.57 | - | Sep 25 | 70th All Japan Corporate Team Championships, Nagaragawa Stadium, Gifu |
5000m | 13:38.43 | - | Jul 16 | Hokuren Distance Challenge, Aoba Park Athletic Field, Chitose |
10000m | 28:50.26 | - | Jul 9 | Hokuren Distance Challenge, Municipal Stadium, Kitami |
5000m | 13:52.45 | - | Jun 5 | 296th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:55.39 | - | May 8 | 295th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 14:49.48 | - | Apr 24 | Saga Record Meeting, Sunrise Park, Saga |
Semi | 1:01:48 | - | Jan 30 | Osaka Half Marathon, Osaka |
2021
10 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 14:00.95 | - | Dec 10 | Edion Distance Challenge in Kyoto 2021, Takebishi Stadium, Kyoto |
10000m | 28:14.15 | - | Dec 4 | 293th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:39.86 | - | Nov 14 | 292nd Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama |
10000m | 28:33.44 | - | Oct 17 | 3rd Night Game Meeting, Prefectural Stadium, Isahaya |
5000m | 14:00.45 | - | Sep 25 | 205th Tokai University Long Distance Competition, Athletics Stadium, Hadano |
5000m | 14:18.23 | - | Jun 24 | 105th Japan Championships, Yanmar Stadium Nagai, Osaka |
10000m | 28:35.91 | - | May 22 | 64th Kyushu Business Group Championships, Municipal Sayagatani Stadium, Kitakyushu |
5000m | 13:42.75 | - | May 9 | "READY STEADY TOKYO - Athletics" |
5000m | 13:47.46 | - | Apr 10 | 29th Kanakuri Memorial Meet |
3000m | 8:02.88 | - | Apr 3 | 2nd Tokyo Rikukyo Middle Distance Challenge, Komazawa Olympic Park Athletic Stadium, Tokyo |
2020
9 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 13:35.24 | - | Dec 4 | 104th Japan Championships |
10000m | 28:35.62 | - | Nov 21 | Long Distance Meeting, Kamiyugi Park Athletic Stadium, Hachioji |
5000m | 13:40.57 | - | Nov 15 | 281st Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama |
5000m | 13:46.13 | - | Oct 11 | 4th Night Game Meeting, Prefectural Stadium, Isahaya |
5000m | 13:48.93 | - | Sep 26 | 3rd Chugoku Long Distance Meeting, Municipal Stadium, Miyoshi |
5000m | 13:53.43 | - | Sep 20 | 68th All Japan Corporate Teams Championships, Prefectural Stadium, Kumagaya |
1500m | 3:51.4HT | - | Sep 14 | 35th MxK Distance Challenge, Yoyogi Park Athletic Track, Tokyo |
5000m | 14:21.80 | - | Jul 26 | 83rd Tokyo Championships, Komazawa Olympic Park Athletic Stadium, Tokyo |
5000m | 14:08.30 | - | Jul 5 | Saga Prefectural Championships, Sunrise Park, Saga |
2019
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
10000m | 29:07.87 | - | Nov 23 | Hachioji Long Distance Meet, Hosei University Stadium, Machida |
10000m | 29:15.99 | - | Apr 20 | 269th Nittaidai Distance Meet, Yokohama |
Semi | 1:04:57 | - | Feb 3 | Half Marathon, Kanagawa |
2018
3 performances| Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|
5000m | 13:59.27 | - | Oct 21 | Yokohama 266th Nittai University Time Trials, Yokohama |
5000m | 14:08.51 | - | Sep 23 | Osaka All Japan Corporate Teams Championships, Osaka |
5000m | 13:59.93 | - | Jul 7 | Kitami Hokuren Distance Challenge, Kitami |
Showing 1 - 50 of 117
Honours
No medals
FAQ
Frequently asked questions
What is Aritaka Kajiwara's 10 000 m personal best?
Aritaka Kajiwara's 10 000 m personal best is 28:08.21, set on Nov 11, 2023 in NITTAIDAI Athletic Stadium, Yokohama (JPN).
Which events does Aritaka Kajiwara compete in?
Aritaka Kajiwara competes in the 10 000 m and Half Marathon.
How did Aritaka Kajiwara perform in 2025?
2025 season best: 14:00.77, set on May 4, 2025 in Nishishina Athletic Stadium, Nobeoka (JPN). Last competition: 18th NITTAIDAI Challenge Games, NITTAIDAI Athletic Stadium, Yokohama on Nov 16, 2025, 14:24.73.