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| Name: | Aki, Kentaro | 安喜健太郎 |
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| Club: | あきけんジャパン | ||
| Residence: | Tokyo | ||
| Year of birth: | 1975 | (Cat. german: M50) | |
| Date of birth: | 17.07.1975 | (Cat. internat.: M50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 455613 | ||
71 search results (71 Events, 6886.09 km). (More)
| 2025 | 7 Events, 638 km (More) | ||||
|---|---|---|---|---|---|
| 19.10.2025 | Ultramarathon Okumusashi (JPN) | 70km | |||
| 8:45:16 h | Aki, Kentaro | 日暮里ボーイズ | Overall: 221 | M: 182 | Cat M50: 32 |
| 04.-05.10.2025 | Noto Country Journey Run (JPN) | 151km | |||
| 24:25:26 h | Aki, Kentaro | 日暮里ボーイズ | Overall: 60 | M: 54 | Cat M50: 9 |
| 30.-31.08.2025 | Sendai Ultra 100km (JPN) | 105km | |||
| 17:18:24 h | Aki, Kentaro | 日暮里ボーイズ | Overall: 30 | M: 26 | Cat M50: 7 |
| 03.08.2025 | Chiba Ultra Marathon 50km Day Run (JPN) | 50km | |||
| 8:39:30 h | Aki, Kentaro | 日暮里ボーイズ | Overall: 16 | M: 14 | Cat M50: 3 |
| 07.06.2025 | OSJ Aizu Bandaisan Ultramarathon - 100 km (JPN) | 100km | |||
| 14:20:56 h | Aki, Kentaro | ダメ人間予備軍西日暮里支部 | Overall: 178 | M: 148 | Cat M45: 41 |
| 01.-02.02.2025 | Nihondaira and Suruganokuni Ultra Run (JPN) | 100km | |||
| 18:09:16 h | Aki, Kentaro | Overall: 14 | M: 13 | Cat M45: 1 | |
| 26.01.2025 | Minuma Challenge 60 (JPN) | 62km | |||
| 7:36:54 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 35 | M: 33 | Cat M45: 8 |
| 2024 | 3 Events, 247 km (More) | ||||
| 20.10.2024 | Ultramarathon Okumusashi (JPN) | 70km | |||
| 10:00:51 h | Aki, Kentaro | Runtripダメ人間予備軍西 | Overall: 537 | M: 430 | Cat M45: 62 |
| 22.09.2024 | Mina no Tenku Ultra Marathon (JPN) | 75km | |||
| 11:56:53 h | Aki, Kentaro | Overall: 124 | M: 102 | Cat M45: 19 | |
| 27.-28.04.2024 | Miura-Halbinsel-Tour Ultra Walking (JPN) | 102km | |||
| 19:27:15 h | Aki, Kentaro | Overall: 32 | M: 26 | Cat M45: 1 | |
| 2023 | 12 Events, 1122.9 km (More) | ||||
| 17.12.2023 | Okinawa 100km Ultramarathon (JPN) | 100km | |||
| 13:17:14 h | Aki, Kentaro | Overall: 405 | M: 343 | Cat M45: 44 | |
| 18.-19.11.2023 | Mito Kaido Journey run (JPN) | 130km | |||
| 22:42:12 h | Aki, Kentaro | *Tokyo | Overall: 89 | M: 70 | Cat M45: 13 |
| 11.11.2023 | Michikusa-Ultra, Minamiizu 100 km (JPN) | 100km | |||
| 13:41:11 h | Aki, Kentaro | *Tokyo | Overall: 122 | M: 107 | Cat M45: 17 |
| 28.10.2023 | Kosaka Pass Ultra Run (JPN) | 73km | |||
| 9:51:37 h | Aki, Kentaro | Overall: 9 | M: 6 | Cat M45: 3 | |
| 15.10.2023 | Yasaka Ultra Marathon in Hamada - 100 km (JPN) | 100km | |||
| 14:59:49 h | Aki, Kentaro | Overall: 66 | M: 61 | Cat M45: 15 | |
| 24.09.2023 | Aga Ultra Marathon - 100km (JPN) | 100km | |||
| 13:20:21 h | Aki, Kentaro | Overall: 37 | M: 34 | Cat M45: 8 | |
| 09.07.2023 | Mt. Gassan Foot Ultra Marathon (JPN) | 75km | |||
| 10:59:30 h | Aki, Kentaro | Overall: 114 | M: 85 | Cat M45: 11 | |
| 01.07.2023 | 8-Hour Endurance Race Tokorozawa (JPN) | 8h | |||
| 53.900 km | Aki, Kentaro | キミの瞳にfall IN L | Overall: 133 | M: 87 | Cat M45: 15 |
| 04.06.2023 | OSJ Aizu Bandaisan Ultramarathon - 100 km (JPN) | 100km | |||
| 14:55:39 h | Aki, Kentaro | ダメ人間予備軍西日暮里支部 | Overall: 131 | M: 115 | Cat M45: 24 |
| 23.04.2023 | Suo-Oshima Ultra Marathon - 100 km (JPN) | 100km | |||
| 13:42:21 h | Aki, Kentaro | Overall: 114 | M: 99 | Cat M45: 19 | |
| 08.04.2023 | Toda Saiko 70 km (JPN) | 71km | |||
| 8:16:13 h | Aki, Kentaro | ダメ人間予備軍西日暮里 | Overall: 145 | M: 121 | Cat M45: 25 |
| 01.-02.04.2023 | Saitama Romantic Road Chronicle Gaiden Shinryuu (JPN) | 120km | |||
| 20:23:05 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 20 | M: 16 | Cat M45: 4 |
| 2022 | 7 Events, 730.39 km (More) | ||||
| 20.11.2022 | Minuma Challenge 60 (JPN) | 63km | |||
| 8:10:55 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 52 | M: 45 | Cat M45: 7 |
| 05.-06.11.2022 | Tokyo Great Race 128km (JPN) | 128km | |||
| 22:45:26 h | Aki, Kentaro | Overall: 23 | M: 15 | Cat M45: 2 | |
| 09.10.2022 | Echigo Kubikino 100km Ultramarathon (JPN) | 100km | |||
| 13:53:21 h | Aki, Kentaro | *Tokyo | Overall: 830 | M: 691 | Cat M45: 110 |
| 12.06.2022 | JAL Mukatsuku Double Marathon (JPN) | 84.39km | |||
| 10:38:29 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 179 | M: 153 | Cat M45: 19 |
| 24.04.2022 | Yamadera Zao 100 Km Ultra Marathon (JPN) | 100km | |||
| 18:58:08 h | Aki, Kentaro | Overall: 73 | M: 62 | Cat M45: 18 | |
| 02.-03.04.2022 | Tone River Run Up Journey Run Downstream (JPN) | 155km | |||
| 27:08:00 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 63 | M: 52 | Cat M45: 9 |
| 13.03.2022 | Ibaraki 100k Ultra Marathon (JPN) | 100km | |||
| 13:37:26 h | Aki, Kentaro | Overall: 254 | M: 234 | Cat M45: 31 | |
| 2021 | 2 Events, 115.8 km (More) | ||||
| 04.07.2021 | 8-Hour Endurance Race Tokorozawa (JPN) | 8h | |||
| 58.800 km | Aki, Kentaro | あきけんジャパン | Overall: 233 | M: 166 | Cat M45: 33 |
| 08.05.2021 | Kimitsu Ultra Marathon (JPN) | 57km | |||
| 7:53:36 h | Aki, Kentaro | Overall: 195 | M: 167 | Cat M45: 25 | |
| 2020 | 2 Events, 247 km (More) | ||||
| 24.-25.10.2020 | Autumn leaves in Okumusashi / Chichibu Journey run (JPN) | 146km | |||
| 24:37:06 h | Aki, Kentaro | *Tokyo Pref. | Overall: 153 | M: 134 | Cat M45: 34 |
| 22.-23.08.2020 | World Cultural Heritage "Fuji" Foot Race (JPN) | 101km | |||
| 16:56:43 h | Aki, Kentaro | Overall: 86 | M: 77 | Cat M45: 19 | |
| 2019 | 8 Events, 798 km (More) | ||||
| 08.12.2019 | Tobishima Ultra Marathon (JPN) | 100km | |||
| 13:26:32 h | Aki, Kentaro | Overall: 148 | M: 123 | Cat M40: 19 | |
| 14.-15.09.2019 | Utsukushima Fukushima Journey Run 129K (JPN) | 129km | |||
| 21:42:40 h | Aki, Kentaro | 君の瞳にfallinlove | Overall: 28 | M: 22 | Cat M40: 5 |
| 16.06.2019 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 13:13:35 h | Aki, Kentaro | Overall: 285 | M: 225 | Cat M40: 32 | |
| 02.06.2019 | Ultramarathon Okumusashi (JPN) | 78km | |||
| 10:51:04 h | Aki, Kentaro | ダメ人間予備軍西日暮里支部 | Overall: 1201 | M: 978 | Cat M40: 115 |
| 19.05.2019 | Tokyo Shibamata 100 km (JPN) | 100km | |||
| 13:52:24 h | Aki, Kentaro | Overall: 1307 | M: 1192 | Cat M40: 166 | |
| 28.04.2019 | Tamagawa Ultra Marathon - 100 km (JPN) | 100km | |||
| 12:41:25 h | Aki, Kentaro | Overall: 22 | M: 20 | Cat M40: 6 | |
| 24.03.2019 | Ibaraki 100k Ultra Marathon (JPN) | 100km | |||
| 13:10:11 h | Aki, Kentaro | 嗚呼ナイスですねえ~ | Overall: 394 | M: 349 | Cat M40: 52 |
| 23.02.2019 | Little Edo 91km (JPN) | 91km | |||
| 11:35:55 h | Aki, Kentaro | キミの瞳にfall IN Love | Overall: 21 | M: 17 | Cat M40: 3 |
| 2018 | 8 Events, 773 km (More) | ||||
| 21.10.2018 | Noto Peninsula 100 km Ultra Marathon (JPN) | 100km | |||
| 13:30:00 h | Aki, Kentaro | *Arakawa Ward, Tokyo Pref. | Overall: 216 | M: 175 | Cat M40: 23 |
| 23.09.2018 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 12:41:10 h | Aki, Kentaro | *Tokyo, Tokyo Pref. | Overall: 363 | M: 307 | Cat M40: 59 |
| 16.09.2018 | Akiota Yajirushi Marathon 88km (JPN) | 88km | |||
| 12:07:00 h | Aki, Kentaro | *Tokyo | Overall: 168 | M: 138 | Cat M40: 17 |
| 10.06.2018 | Koyasan and Ryujin-Onsen 100 Km Ultra Marathon (JPN) | 100km | |||
| 13:18:10 h | Aki, Kentaro | Overall: 182 | M: 164 | Cat M40: 28 | |
| 03.06.2018 | Nanto 100 Km Ultramarathon (JPN) | 100km | |||
| 13:47:15 h | Aki, Kentaro | Overall: 123 | M: 108 | Cat M40: 19 | |
| 20.05.2018 | Saba Highway Ultramarathon (JPN) | 72km | |||
| 10:02:36 h | Aki, Kentaro | Overall: 347 | M: 300 | Cat M40: 53 | |
| 22.04.2018 | 100 km Ultra Maranic Osaka (JPN) | 100km | |||
| 12:47:33 h | Aki, Kentaro | *Tokyo | Overall: 216 | M: 188 | Cat M40: 34 |
| 03.-04.03.2018 | Oedo Night run 113k (JPN) | 113km | |||
| 14:07:46 h | Aki, Kentaro | Overall: 15 | M: 13 | Cat M40: 2 | |
| 2017 | 7 Events, 733 km (More) | ||||
| 04.11.2017 | Myoko Ultra Run rAce 18 (JPN) | 45km | |||
| 5:25:33 h | Aki, Kentaro | ダメ人間予備軍 | Overall: 35 | M: 33 | Cat M40: 7 |
| 15.10.2017 | River Shimanto 100km (JPN) | 100km | |||
| 11:32:28 h | Aki, Kentaro | Overall: 420 | M: 377 | Cat M40: 74 | |
| 02.09.2017 | Miyagi Yumeguri Ultra Marathon - 115 km (JPN) | 115km | |||
| 14:03:04 h | Aki, Kentaro | Overall: 42 | M: 36 | Cat M40: 7 | |
| 02.07.2017 | Nikko 100km Ultramarathon (JPN) | 100km | |||
| 13:28:09 h | Aki, Kentaro | *Tokyo | Overall: 765 | M: 676 | Cat M40: 115 |
| 28.05.2017 | Ebisu-Daikoku 100 km Marathon (JPN) | 100km | |||
| 11:44:29 h | Aki, Kentaro | *Arakawa-Ku, Tokyo Pref. | Overall: 118 | M: 109 | Cat M40: 20 |
| 04.-05.05.2017 | Nagasaki Tachibana Gulf Coast Super Maranic 173 (JPN) | 173km | |||
| 30:14:31 h | Aki, Kentaro | Overall: 76 | M: 59 | Cat M40: 13 | |
| 23.04.2017 | Okukumano 100 Km Ultramarathon (JPN) | 100km | |||
| 11:39:55 h | Aki, Kentaro | *Tokyo | Overall: 103 | M: 84 | Cat M40: 11 |
| 2016 | 6 Events, 591 km (More) | ||||
| 15.10.2016 | Inagawa 100km Ultra-Marathon (JPN) | 100km | |||
| 13:30:12 h | Aki, Kentaro | *Tokyo | Overall: 50 | M: 44 | Cat M40: 8 |
| 09.10.2016 | Echigo Kubikino 100km Ultramarathon (JPN) | 100km | |||
| 11:53:56 h | Aki, Kentaro | *Tokyo | Overall: 486 | M: 429 | Cat M40: 64 |
| 25.09.2016 | Muraoka 100 km Ultra Marathon (JPN) | 100km | |||
| 13:40:15 h | Aki, Kentaro | Overall: 359 | M: 315 | Cat M40: 79 | |
| 28.05.2016 | Tojinbo 103 Km Ultramarathon (JPN) | 103km | |||
| 11:28:46 h | Aki, Kentaro | Overall: 23 | M: 21 | Cat M40: 5 | |
| 03.05.2016 | Mukogawa Yurikamome Ultra Marathon (JPN) | 70km | |||
| 7:17:55 h | Aki, Kentaro | あきけんjapan西日暮里支部 | Overall: 237 | M: 211 | Cat M40: 60 |
| 24.04.2016 | Fuji 5 Lakes 118 km Challenge (JPN) | 118km | |||
| 14:17:11 h | Aki, Kentaro | あきけんジャパン | Overall: 378 | M: 334 | Cat M40: 73 |
| 2015 | 2 Events, 202 km (More) | ||||
| 29.08.2015 | KISO Great Traverse 100 Km Ultra Marathon (JPN) | 100km | |||
| 13:08:44 h | Aki, Kentaro | *Tokyo | Overall: 150 | M: 136 | Cat M40: 28 |
| 11.04.2015 | Okuizumo Ultra Orochi 100km Tooashi (JPN) | 102km | |||
| 11:52:39 h | Aki, Kentaro | Overall: 29 | M: 28 | Cat M35: 5 | |
| 2014 | 4 Events, 377 km (More) | ||||
| 21.09.2014 | 100 km Ultramarathon Hakusan-Shirakawago (JPN) | 100km | |||
| 13:45:33 h | Aki, Kentaro | Overall: 317 | M: 293 | Cat M35: 31 | |
| 27.07.2014 | Ultramarathon Okumusashi (JPN) | 77km | |||
| 10:27:01 h | Aki, Kentaro | チームあきけん | Overall: 581 | M: 476 | Cat M35: 56 |
| 08.06.2014 | Hida Takayama 100 km Ultramarathon (JPN) | 100km | |||
| 12:06:43 h | Aki, Kentaro | あきけんジャパン | Overall: 380 | M: 353 | Cat M35: 63 |
| 18.05.2014 | Yatsugatake Nobeyama 100 km (JPN) | 100km | |||
| 13:18:07 h | Aki, Kentaro | *Tokyo | Overall: 718 | M: 661 | Cat M35: 105 |
| 2013 | 3 Events, 311 km (More) | ||||
| 15.09.2013 | Tango 100 km Ultramarathon (JPN) | 100km | |||
| 13:37:18 h | Aki, Kentaro | あきけんジャパン | Overall: 1073 | M: 980 | Cat M35: 127 |
| 09.06.2013 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 13:30:40 h | Aki, Kentaro | *Tokyo | Overall: 697 | M: 624 | Cat M35: 109 |
| 02.-03.03.2013 | Oedo Night run 111k (JPN) | 111km | |||
| 16:35:24 h | Aki, Kentaro | *Tokyo | Overall: 25 | M: 22 | Cat M35: 5 |
Personal bests
Your list of personal best performances only contains performances of races which can be included into rankings.
In brackets rank in yearly international/national rankings.
| PB | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100km | 11:32:28 |
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13:17:14
(5672/3115) |
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13:52:24
(9422/5105) |
13:18:10
(7796/4077) |
11:32:28
(3899/1659) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ultramarathon Okumusashi | 4 | 8:45:16 | 10:00:51 | 10:51:04 | 10:27:01 | |||||||||
| OSJ Aizu Bandaisan Ultramarathon - 100 km | 2 | 14:20:56 | 14:55:39 | |||||||||||
| Minuma Challenge 60 | 2 | 7:36:54 | 8:10:55 | |||||||||||
| Ibaraki 100k Ultra Marathon | 2 | 13:37:26 | 13:10:11 | |||||||||||
| Echigo Kubikino 100km Ultramarathon | 2 | 13:53:21 | 11:53:56 | |||||||||||
| Oedo Night run 111k | 2 | 14:07:46 | 16:35:24 | |||||||||||
| 8-Hour Endurance Race Tokorozawa | 2 | 53.900 | 58.800 |