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| Name: | Sakai, Kosuke | 酒井宏輔 |
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| Club: | Coursek | ||
| Residence: | Chiba Pref. | ||
| Year of birth: | 1975 | (Cat. german: M50) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 410305 | ||
24 search results (24 Events, 2486.7 km). (More)
| 2025 | 4 Events, 667 km (More) | ||||
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| 14.09.2025 | Tango 100 km Ultramarathon (JPN) | 100km | |||
| 12:49:56 h | Sakai, Kosuke | Overall: 521 | M: 456 | Cat M45: 53 | |
| 19.-21.07.2025 | Round of the Boso Peninsula 300K (JPN) | 300km | |||
| 2d 06:40:37 h | Sakai, Kosuke | コースk | Overall: 7 | M: 7 | Cat M45: 2 |
| 18.05.2025 | Yatsugatake Nobeyama 100 km (JPN) | 100km | |||
| 11:55:41 h | Sakai, Kosuke | Overall: 278 | M: 253 | Cat M45: 38 | |
| 25.-26.04.2025 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 34:24:23 h | Sakai, Kosuke | コースk | Overall: 335 | M: 307 | Cat M45: 77 |
| 2024 | 4 Events, 286 km (More) | ||||
| 22.12.2024 | Coast to Coast Boso hanto (JPN) | 70km | |||
| 9:32:35 h | Sakai, Kosuke | Overall: 71 | M: 63 | Cat M45: 14 | |
| 20.10.2024 | River Shimanto 100km (JPN) | 100km | |||
| 10:56:26 h | Sakai, Kosuke | Overall: 292 | M: 252 | Cat M45: 33 | |
| 14.-15.07.2024 | Nozawa Onsen 4100D Mountain Trail (JPN) | 65km | |||
| 13:52:38 h | Sakai, Kosuke | *Chiba Pref. | Overall: 220 | M: 201 | Cat M45: 48 |
| 12.05.2024 | FunTrails Round Minano (JPN) | 51km | |||
| 9:27:28 h | Sakai, Kosuke | コースk | Overall: 303 | M: 272 | Cat M45: 75 |
| 2023 | 2 Events, 222 km (More) | ||||
| 13.05.2023 | Kimitsu Ultra Marathon (JPN) | 55km | |||
| 5:43:27 h | Sakai, Kosuke | Overall: 24 | M: 20 | Cat M45: 8 | |
| 21.-23.04.2023 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 38:39:20 h | Sakai, Kosuke | コースk | Overall: 798 | M: 706 | Cat M45: 195 |
| 2022 | 2 Events, 178.2 km (More) | ||||
| 21.-22.05.2022 | Trainic World 100 Km in Sai-No-Kuni (JPN) | 109.2km | |||
| 23:41:36 h | Sakai, Kosuke | コースk | Overall: 60 | M: 54 | Cat M45: 15 |
| 23.-24.04.2022 | KAI 69k (JPN) | 69km | |||
| 12:28:02 h | Sakai, Kosuke | コースk | Overall: 72 | M: 66 | Cat M45: 12 |
| 2021 | 3 Events, 342 km (More) | ||||
| 07.11.2021 | Koshu Alps Haute Route Challenge (JPN) | 67km | |||
| 13:12:42 h | Sakai, Kosuke | Overall: 114 | M: 105 | Cat M45: 27 | |
| 28.08.2021 | Okushinano 100 - 75 km (JPN) | 75km | |||
| 11:55:19 h | Sakai, Kosuke | コースk | Overall: 111 | M: 93 | Cat M45: 14 |
| 27.-28.02.2021 | Little Edo Oedo 200k (JPN) | 200km | |||
| 31:35:25 h | Sakai, Kosuke | コースk | Overall: 63 | M: 54 | Cat M45: 13 |
| 2020 | 1 Event, 101 km (More) | ||||
| 22.-23.08.2020 | World Cultural Heritage "Fuji" Foot Race (JPN) | 101km | |||
| 12:55:10 h | Sakai, Kosuke | Overall: 13 | M: 11 | Cat M40: 1 | |
| 2019 | 4 Events, 370 km (More) | ||||
| 15.12.2019 | Okinawa 100km Ultramarathon (JPN) | 100km | |||
| 10:50:53 h | Sakai, Kosuke | *Chiba Pref. | Overall: 85 | M: 72 | Cat M40: 11 |
| 25.08.2019 | Tsukuba Renjyo 70 Km Road & Trail Run (JPN) | 70km | |||
| 10:57:32 h | Sakai, Kosuke | コースk | Overall: 76 | M: 71 | Cat M40: 12 |
| 30.06.2019 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 9:38:07 h | Sakai, Kosuke | Overall: 272 | M: 244 | Cat M40: 57 | |
| 19.05.2019 | Tokyo Shibamata 100 km (JPN) | 100km | |||
| 10:47:22 h | Sakai, Kosuke | Overall: 265 | M: 250 | Cat M40: 49 | |
| 2018 | 1 Event, 100 km (More) | ||||
| 03.06.2018 | Tokyo Shibamata 100 km (JPN) | 100km | |||
| 10:24:42 h | Sakai, Kosuke | Overall: 145 | M: 131 | Cat M40: 30 | |
| 2017 | 1 Event, 49 km (More) | ||||
| 29.04.2017 | Ishioka Trail Run (JPN) | 49km | |||
| 6:02:40 h | Sakai, Kosuke | コースk | Overall: 72 | M: 65 | Cat M40: 19 |
| 2016 | 1 Event, 71.5 km (More) | ||||
| 09.-10.10.2016 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 15:52:42 h | Sakai, Kosuke | Coursek | Overall: 770 | M: 705 | Cat M40: 178 |
| 2013 | 1 Event, 100 km (More) | ||||
| 21.04.2013 | Fuji 5 Lakes 100 km Challenge (JPN) | 100km | |||
| 13:54:34 h | Sakai, Kosuke | Overall: 793 | M: 694 | Cat M35: 83 | |
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 | 2013 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100km | 9:38:07 |
12:49:56
(5706/2573) |
10:56:26
(2576/901) |
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9:38:07
(1195/430) |
10:24:42
(2225/892) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2013 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tokyo Shibamata 100 km | 2 | 10:47:22 | 10:24:42 | |||||||||
| Ultra-Trail Mt. Fuji (UTMF) | 2 | 34:24:23 | 38:39:20 |