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| Name: | Ishii, Katsuya | 石井克弥 |
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| Club: | 慶應義塾大学 | ||
| Residence: | Tokyo | ||
| Year of birth: | 1997 | (Cat. german: M20) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M23) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 1676659 | ||
10 search results (10 Events, 740 km). (More)
| 2025 | 3 Events, 270 km (More) | ||||
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| 14.12.2025 | Izu Trail Journey (JPN) | 70km | |||
| 7:14:01 h | Ishii, Katsuya | Overall: 10 | M: 10 | Cat M23: 4 | |
| 17.-18.05.2025 | Trainic World 100 Km in Sai-No-Kuni (JPN) | 100km | |||
| 18:59:52 h | Ishii, Katsuya | *Tokyo | Overall: 12 | M: 12 | Cat M23: 4 |
| 13.04.2025 | Tamagawa Ultra Marathon - 100 km (JPN) | 100km | |||
| 8:37:04 h | Ishii, Katsuya | Overall: 2 | M: 2 | Cat M23: 2 | |
| 2024 | 1 Event, 70 km (More) | ||||
| 08.12.2024 | Izu Trail Journey (JPN) | 70km | |||
| 6:48:30 h | Ishii, Katsuya | Overall: 9 | M: 9 | Cat M23: 4 | |
| 2023 | 3 Events, 250 km (More) | ||||
| 10.12.2023 | Izu Trail Journey (JPN) | 70km | |||
| 6:39:46 h | Ishii, Katsuya | Overall: 4 | M: 4 | Cat M23: 3 | |
| 27.08.2023 | Tsukuba Renjyo 70 Km Road & Trail Run (JPN) | 75km | |||
| 7:27:22 h | Ishii, Katsuya | *Tokyo | Overall: 1 | M: 1 | Cat M23: 1 |
| 17.-18.06.2023 | Okumusashi Long Trail Race 105K (JPN) | 105km | |||
| 20:44:33 h | Ishii, Katsuya | *Tokyo | Overall: 6 | M: 6 | Cat M23: 2 |
| 2019 | 1 Event, 50 km (More) | ||||
| 14.04.2019 | Japan Championships in Athletics 50km Walking (JPN) | 50km | |||
| 3:57:37 h | Ishii, Katsuya | 慶應義塾大学 | Overall: 12 | M: 12 | Cat MU23: 2 |
| 2018 | 2 Events, 100 km (More) | ||||
| 28.10.2018 | All Japan Race Walking in Takahata (JPN) | 50km | |||
| 4:05:41 h | Ishii, Katsuya | 慶應義塾大学 | Overall: 8 | M: 8 | Cat MU23: 3 |
| 15.04.2018 | Japan Championships in Athletics 50km Walking (JPN) | 50km | |||
| 4:05:46 h | Ishii, Katsuya | 慶應義塾大学 | Overall: 5 | M: 5 | Cat MU23: 2 |
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 | 2019 | 2018 | |
|---|---|---|---|---|---|---|
| 50km | 3:57:37 |
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3:57:37
(1287/26) |
4:05:41
(1437/30) |
Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2019 | 2018 | ||
|---|---|---|---|---|---|---|
| Izu Trail Journey | 3 | 7:14:01 | 6:48:30 | 6:39:46 | ||
| Japan Championships in Athletics 50km Walking | 2 | 3:57:37 | 4:05:46 |