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| Name: | Yao, Kosuke | 八尾浩輔 |
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| Club: | ちばっくま | ||
| Residence: | Chiba Pref. | ||
| Year of birth: | 1971 | (Cat. german: M55) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 309565 | ||
25 search results (21 Events, 2103.646 km). (More)
| 2025 | 4 Events, 387 km (More) | ||||
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| 01.-02.11.2025 | Mito Kaido Journey run (JPN) | 130km/2stages | |||
| 16:14:55 h | Yao, Kosuke | ちばっくま | Overall: 10 | M: 9 | Cat M50: 1 |
| 02.11.2025 | Mito Kaido Journey run - Stage 2 (JPN) | 68.1km | |||
| 8:34:11 h | Yao, Kosuke | ちばっくま | Overall: 11 | M: 10 | Cat M50: 1 |
| 01.11.2025 | Mito Kaido Journey run - Stage 1 (JPN) | 62.2km | |||
| 7:40:44 h | Yao, Kosuke | ちばっくま | Overall: 7 | M: 7 | Cat M50: 1 |
| 03.08.2025 | Chiba Ultra Marathon 50km Day Run (JPN) | 50km | |||
| 6:11:04 h | Yao, Kosuke | ちばっくま | Overall: 2 | M: 2 | Cat M50: 1 |
| 12.04.2025 | Toda Saiko 70 km (JPN) | 71km | |||
| 7:12:16 h | Yao, Kosuke | *Chiba Pref. | Overall: 73 | M: 61 | Cat M50: 15 |
| 15.-16.03.2025 | Arakawa Riverside Journey Stage Race (JPN) | 136km/2stages | |||
| 17:10:05 h | Yao, Kosuke | *Chiba Pref. | Overall: 14 | M: 12 | Cat M50: 3 |
| 16.03.2025 | Arakawa Riverside Journey Stage Race - Stage 2 (JPN) | 54.2km | |||
| 7:16:00 h | Yao, Kosuke | *Chiba Pref. | Overall: 28 | M: 23 | Cat M50: 4 |
| 15.03.2025 | Arakawa Riverside Journey Stage Race - Stage 1 (JPN) | 82km | |||
| 9:54:05 h | Yao, Kosuke | *Chiba Pref. | Overall: 14 | M: 12 | Cat M50: 3 |
| 2018 | 2 Events, 162.6 km (More) | ||||
| 08.07.2018 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 49.6km | |||
| 8:27:37 h | Yao, Kosuke | Overall: 116 | M: 111 | Cat M45: 20 | |
| 03.-04.03.2018 | Oedo Night run 113k (JPN) | 113km | |||
| 12:04:06 h | Yao, Kosuke | Overall: 3 | M: 3 | Cat M45: 2 | |
| 2017 | 1 Event, 129 km (More) | ||||
| 23.-24.09.2017 | SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup (JPN) | 129km | |||
| 27:57:59 h | Yao, Kosuke | *Chiba Pref. | Overall: 176 | M: 159 | Cat M45: 39 |
| 2016 | 4 Events, 356.412 km (More) | ||||
| 18.-19.09.2016 | Karisakatoge beyond Chichibu Run (JPN) | 144km | |||
| 20:40:36 h | Yao, Kosuke | Overall: 28 | M: 27 | Cat M40: 8 | |
| 03.07.2016 | 8-Hour Endurance Race Tokorozawa - 3 tai (JPN) | 8h | |||
| 71.412 km | Yao, Kosuke | *Chiba Ken | Overall: 17 | M: 12 | Cat M40: 3 |
| 12.06.2016 | Trainic world Hanno-Ogose Trail Run 50km (JPN) | 50km | |||
| 8:51:22 h | Yao, Kosuke | Overall: 40 | M: 39 | Cat M40: 11 | |
| 05.03.2016 | Little Edo 91km (JPN) | 91km | |||
| 8:37:28 h | Yao, Kosuke | ちばっくま | Overall: 2 | M: 1 | Cat M40: 1 |
| 2015 | 3 Events, 314.634 km (More) | ||||
| 26.-27.09.2015 | Shizuoka to Yamanashi (STY) (JPN) | 76.7km | |||
| 15:40:06 h | Yao, Kosuke | Overall: 257 | M: 233 | Cat M40: 54 | |
| 18.-19.07.2015 | OSJ Ontake 100 Mile Ultra Trail (JPN) | 100mi | |||
| 21:38:10 h | Yao, Kosuke | *Chiba Pref. | Overall: 18 | M: 18 | Cat M40: 2 |
| 22.06.2015 | Ultramarathon Okumusashi (JPN) | 77km | |||
| 7:37:48 h | Yao, Kosuke | ちばっくま | Overall: 174 | M: 162 | Cat M40: 39 |
| 2014 | 4 Events, 412 km (More) | ||||
| 14.-15.09.2014 | Karisakatoge beyond Chichibu Run (JPN) | 142km | |||
| 19:23:37 h | Yao, Kosuke | ちばっくま | Overall: 36 | M: 34 | Cat M40: 7 |
| 19.07.2014 | OSJ Ontake 100km Ultra Trail (JPN) | 100km | |||
| 13:46:43 h | Yao, Kosuke | *Chiba Pref. | Overall: 199 | M: 188 | Cat M40: 43 |
| 01.06.2014 | Tokyo Shibamata 100 km (JPN) | 100km | |||
| 9:57:01 h | Yao, Kosuke | Overall: 21 | M: 21 | Cat M40: 6 | |
| 12.04.2014 | Toda Saiko 70 km (JPN) | 70km | |||
| 6:22:19 h | Yao, Kosuke | ちばっくま | Overall: 31 | M: 29 | Cat M40: 7 |
| 2013 | 2 Events, 242 km (More) | ||||
| 15.-16.09.2013 | Karisakatoge beyond Chichibu Run (JPN) | 142km | |||
| 19:55:35 h | Yao, Kosuke | ちばっくま | Overall: 34 | M: 31 | Cat M40: 6 |
| 01.06.2013 | Tokyo Shibamata 100 km (JPN) | 100km | |||
| 10:53:12 h | Yao, Kosuke | *Chiba Pref. | Overall: 217 | M: 199 | Cat M40: 35 |
| 2012 | 1 Event, 100 km (More) | ||||
| 20.05.2012 | Yatsugatake Nobeyama 100 km (JPN) | 100km | |||
| 11:14:07 h | Yao, Kosuke | Overall: 156 | M: 149 | Cat M40: 40 | |
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 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | |
|---|---|---|---|---|---|---|---|---|---|
| 100km | 9:57:01 |
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9:57:01
(1552/458) |
10:53:12
(2918/903) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | ||
|---|---|---|---|---|---|---|---|---|---|
| Karisakatoge beyond Chichibu Run | 3 | 20:40:36 | 19:23:37 | 19:55:35 | |||||
| Tokyo Shibamata 100 km | 2 | 9:57:01 | 10:53:12 | ||||||
| Toda Saiko 70 km | 2 | 7:12:16 | 6:22:19 |