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| Name: | Shiraiwa, Ryota | 白岩良太 |
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| Club: | 明走会 | ||
| Residence: | Tokyo | ||
| Year of birth: | 1971 | (Cat. german: M55) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 595137 | ||
15 search results (15 Events, 1211.75 km). (More)
| 2025 | 1 Event, 59 km (More) | ||||
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| 06.09.2025 | Kyoto Grand Traverse (JPN) | 59km | |||
| 10:37:50 h | Shiraiwa, Ryota | Overall: 86 | M: 84 | Cat M50: 13 | |
| 2024 | 3 Events, 250 km (More) | ||||
| 08.09.2024 | Hakuba Int. Trail Run (JPN) | 50km | |||
| 7:32:40 h | Shiraiwa, Ryota | *Tokyo | Overall: 86 | M: 80 | Cat M50: 11 |
| 30.06.2024 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 9:57:51 h | Shiraiwa, Ryota | Overall: 291 | M: 260 | Cat M50: 46 | |
| 21.04.2024 | Fuji 4 Lakes 100 km Challenge (JPN) | 100km | |||
| 11:06:12 h | Shiraiwa, Ryota | 明走会 | Overall: 259 | M: 223 | Cat M50: 29 |
| 2023 | 2 Events, 200 km (More) | ||||
| 25.06.2023 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 12:23:27 h | Shiraiwa, Ryota | Overall: 1253 | M: 1104 | Cat M50: 206 | |
| 24.-26.02.2023 | Oxfam Trailwalker Hong Kong (HKG) | 100km | |||
| 22:53:50 h | Shiraiwa, Ryota | Overall: 218 | M: 197 | Cat M50: 22 | |
| 2022 | 2 Events, 100 km (More) | ||||
| 24.12.2022 | Golden 100 Hong Kong - 45 km Run (HKG) | 45km | |||
| 7:10:48 h | Shiraiwa, Ryota | Overall: 76 | M: 63 | Cat M50: 4 | |
| 29.05.2022 | MSIG HK50 West (HKG) | 55km | |||
| 8:28:11 h | Shiraiwa, Ryota | Overall: 20 | M: 17 | Cat M50: 3 | |
| 2019 | 3 Events, 250 km (More) | ||||
| 14.-15.12.2019 | The North Face 100 Hong Kong (HKG) | 100km | |||
| 25:48:59 h | Shiraiwa, Ryota | Overall: 213 | M: 182 | Cat M45: 27 | |
| 26.10.2019 | MSIG HK50 (HKG) | 50km | |||
| 7:50:20 h | Shiraiwa, Ryota | Overall: 79 | M: 69 | Cat M45: 9 | |
| 19.-20.01.2019 | Hong Kong 100 Ultra Trail Race (HKG) | 100km | |||
| 24:45:23 h | Shiraiwa, Ryota | Overall: 828 | M: 649 | Cat M45: 98 | |
| 2018 | 1 Event, 100 km (More) | ||||
| 16.-18.11.2018 | Oxfam Trailwalker Hong Kong (HKG) | 100km | |||
| 28:04:23 h | Shiraiwa, Ryota | Overall: 1702 | M: 1403 | Cat M45: 211 | |
| 2017 | 1 Event, 100 km (More) | ||||
| 14.01.2017 | Hong Kong 100 Ultra Trail Race (HKG) | 100km | |||
| 26:45:45 h | Shiraiwa, Ryota | Overall: 1401 | M: 1129 | Cat M45: 162 | |
| 2015 | 1 Event, 51.75 km (More) | ||||
| 03.01.2015 | MR25 Cross Country Ultra Marathon (SGP) | 12h | |||
| 51.750 km | Shiraiwa, Ryota | Overall: 165 | M: 132 | Cat M40: 10 | |
| 2014 | 1 Event, 101 km (More) | ||||
| 20.-21.09.2014 | Craze Ultra 101 km (SGP) | 101km | |||
| 20:59:56 h | Shiraiwa, Ryota | Overall: 49 | M: 40 | Cat M40: 6 | |
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 | 2019 | 2018 | 2017 | 2015 | 2014 | |
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| 100km | 9:57:51 |
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9:57:51
(1534/501) |
12:23:27
(4090/2044) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2019 | 2018 | 2017 | 2015 | 2014 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Oxfam Trailwalker Hong Kong | 2 | 22:53:50 | 28:04:23 | |||||||
| Hong Kong 100 Ultra Trail Race | 2 | 24:45:23 | 26:45:45 | |||||||
| Lake Saroma 100 Km Ultramarathon | 2 | 9:57:51 | 12:23:27 |