| Name: | Chiba, Tsutomu | 千葉勉 |
|
| Club: | 栄町消防本部 | ||
| Residence: | Chiba Pref. | ||
| Year of birth: | 1974 | (Cat. german: M50) | |
| Date of birth: | 25.09.1974 | (Cat. internat.: M50) | |
| Nationality: | JPN ![]() |
Japan | |
| RunnerID: | 640151 | ||
5 search results (5 Events, 518 km). (More)
| 2025 | 1 Event, 100 km (More) | ||||
|---|---|---|---|---|---|
| 19.10.2025 | River Shimanto 100km (JPN) | 100km | |||
| 13:42:39 h | Chiba, Tsutomu | Overall: 832 | M: 687 | Cat M50: 86 | |
| 2017 | 1 Event, 100 km (More) | ||||
| 10.09.2017 | 100 km Ultramarathon Hakusan-Shirakawago (JPN) | 100km | |||
| 11:52:24 h | Chiba, Tsutomu | 栄町消防本部 | Overall: 150 | M: 137 | Cat M40: 21 |
| 2015 | 2 Events, 218 km (More) | ||||
| 18.10.2015 | River Shimanto 100km (JPN) | 100km | |||
| 12:41:33 h | Chiba, Tsutomu | *Chiba Pref. | Overall: 627 | M: 544 | Cat M40: 108 |
| 19.04.2015 | Fuji 5 Lakes 118 km Challenge (JPN) | 118km | |||
| 14:10:42 h | Chiba, Tsutomu | 栄町消防本部 | Overall: 328 | M: 298 | Cat M40: 67 |
| 2014 | 1 Event, 100 km (More) | ||||
| 21.09.2014 | 100 km Ultramarathon Hakusan-Shirakawago (JPN) | 100km | |||
| 11:28:51 h | Chiba, Tsutomu | Overall: 81 | M: 75 | Cat M35: 14 | |
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 | 2017 | 2015 | 2014 | |
|---|---|---|---|---|---|
| 100km | 12:41:33 |
13:42:39
(7198/3356) |
|
12:41:33
(7194/3636) |
|
Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2017 | 2015 | 2014 | ||
|---|---|---|---|---|---|
| 100 km Ultramarathon Hakusan-Shirakawago | 2 | 11:52:24 | 11:28:51 | ||
| River Shimanto 100km | 2 | 13:42:39 | 12:41:33 |





