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| Name: | Shiroishi, Naoki | 白石直樹 |
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| Club: | ORC | ||
| Residence: | Miyagi Pref. | ||
| Year of birth: | 1974 | (Cat. german: M50) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 1284197 | ||
10 search results (10 Events, 823 km). (More)
| 2025 | 2 Events, 229 km (More) | ||||
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| 25.05.2025 | OSJ Okukuji Trail 60k (JPN) | 62km | |||
| 13:05:44 h | Shiroishi, Naoki | OLC | Overall: 157 | M: 144 | Cat M50: 21 |
| 25.-26.04.2025 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 42:21:18 h | Shiroishi, Naoki | ORC | Overall: 1045 | M: 948 | Cat M50: 173 |
| 2024 | 2 Events, 103 km (More) | ||||
| 06.07.2024 | Shiga Kogen 55 (JPN) | 55km | |||
| 9:54:19 h | Shiroishi, Naoki | ORC | Overall: 254 | M: 219 | Cat M45: 48 |
| 15.06.2024 | KTF Trail running race - Rockin Bear (JPN) | 48km | |||
| 8:44:31 h | Shiroishi, Naoki | ORC | Overall: 387 | M: 328 | Cat M45: 67 |
| 2023 | 1 Event, 70 km (More) | ||||
| 10.12.2023 | Izu Trail Journey (JPN) | 70km | |||
| 11:04:42 h | Shiroishi, Naoki | Overall: 503 | M: 445 | Cat M45: 102 | |
| 2022 | 2 Events, 216 km (More) | ||||
| 20.-21.11.2022 | FunTrails100K Round (JPN) | 106km | |||
| 29:07:34 h | Shiroishi, Naoki | *Miyagi Pref. | Overall: 407 | M: 362 | Cat M45: 87 |
| 18.-19.09.2022 | Shinetsu Five Mountains Trail 110km (JPN) | 110km | |||
| 21:49:41 h | Shiroishi, Naoki | *Miyagi Pref. | Overall: 333 | M: 285 | Cat M45: 76 |
| 2021 | 1 Event, 55 km (More) | ||||
| 31.10.2021 | Yamadera Zao 100 Km Ultra Marathon (JPN) | 55km | |||
| 5:52:23 h | Shiroishi, Naoki | Overall: 38 | M: 33 | Cat M45: 8 | |
| 2019 | 2 Events, 150 km (More) | ||||
| 01.09.2019 | OSJ Adatara Trail 50K (JPN) | 50km | |||
| 14:36:09 h | Shiroishi, Naoki | Overall: 218 | M: 192 | Cat M40: 44 | |
| 21.04.2019 | Yamadera Zao 100 Km Ultra Marathon (JPN) | 100km | |||
| 15:26:12 h | Shiroishi, Naoki | *Miyagi Pref. | Overall: 172 | M: 131 | Cat M40: 35 |
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 | 2019 |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2019 | ||
|---|---|---|---|---|---|---|---|
| Yamadera Zao 100 Km Ultra Marathon | 2 | 5:52:23 | 15:26:12 |