| Name: | Kobayashi, Masashi | 小林優史 |
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| Club: | アシックスrc | ||
| Residence: | Tokyo Pref. | ||
| Year of birth: | 1989 | (Cat. german: M35) | |
| Date of birth: | 14.11.1989 | (Cat. internat.: M35) | |
| Nationality: | JPN ![]() |
Japan | |
| RunnerID: | 1309527 | ||
10 search results (10 Events, 2095.95 km). (More)
| 2025 | 3 Events, 827.35 km (More) | ||||
|---|---|---|---|---|---|
| 21.-22.06.2025 | Masuda 24 Hours Ultra Truck Race (JPN) | 24h | |||
| 163.600 km | Kobayashi, Masashi | Overall: 11 | M: 9 | Cat M35: 1 | |
| 24.-25.05.2025 | Hirosaki 24h Ultra Run (JPN) | 24h | |||
| 93.750 km | Kobayashi, Masashi | 栃木陸協 | Overall: 90 | M: 65 | Cat M35: 3 |
| 26.04.-05.05.2025 | Reiheishi Michi Kyoto to Nikko - 570 km (JPN) | 570km | |||
| 5d 04:46:21 h | Kobayashi, Masashi | アシックスrc | Overall: 1 | M: 1 | Cat M35: 1 |
| 2023 | 1 Event, 570 km (More) | ||||
| 29.04.-07.05.2023 | Reiheishi Michi Kyoto to Nikko - 570 km (JPN) | 570km | |||
| 6d 06:39:29 h | Kobayashi, Masashi | Overall: 3 | M: 3 | Cat M23: 1 | |
| 2022 | 1 Event, 230 km (More) | ||||
| 12.-13.03.2022 | Little Edo Oedo 230k (JPN) | 230km | |||
| 23:02:48 h | Kobayashi, Masashi | アシックスrc | Overall: 1 | M: 1 | Cat M23: 1 |
| 2020 | 1 Event, 146 km (More) | ||||
| 24.-25.10.2020 | Autumn leaves in Okumusashi / Chichibu Journey run (JPN) | 146km | |||
| 13:48:05 h | Kobayashi, Masashi | アシックスrc | Overall: 2 | M: 1 | Cat M23: 1 |
| 2019 | 3 Events, 272.6 km (More) | ||||
| 15.12.2019 | Okinawa 100km Ultramarathon (JPN) | 100km | |||
| 8:28:08 h | Kobayashi, Masashi | *Tokyo Pref. | Overall: 11 | M: 10 | Cat M23: 2 |
| 08.09.2019 | 100 km Ultramarathon Hakusan-Shirakawago (JPN) | 100km | |||
| 8:34:06 h | Kobayashi, Masashi | アシックスrc | Overall: 4 | M: 4 | Cat M23: 1 |
| 23.06.2019 | Spatrail - Shima to Kusatsu 72K (JPN) | 72.6km | |||
| 8:05:48 h | Kobayashi, Masashi | Overall: 11 | M: 11 | Cat M23: 3 | |
| 2018 | 1 Event, 50 km (More) | ||||
| 10.06.2018 | Skyline Trail Sugadaira (JPN) | 50km | |||
| 5:28:12 h | Kobayashi, Masashi | Overall: 3 | M: 3 | Cat M23: 1 | |
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 | 2023 | 2022 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|
| 24h | 163.600 |
163.600
(1028/74) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2023 | 2022 | 2020 | 2019 | 2018 | ||
|---|---|---|---|---|---|---|---|
| Reiheishi Michi Kyoto to Nikko - 570 km | 2 | 124:46:21 | 150:39:29 |





