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| Name: | Iwazaki, Osamu | 岩崎脩 |
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| Club: | 昭島動物病院 | ||
| Residence: | Fussa | ||
| Year of birth: | 1982 | (Cat. german: M40) | |
| Date of birth: | 08.01.1982 | (Cat. internat.: M40) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 356836 | ||
26 search results (26 Events, 2835.334 km). (More)
| 2025 | 3 Events, 335 km (More) | ||||
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| 14.-16.11.2025 | TransLantau 120 by UTMB (HKG) | 120km | |||
| 25:18:06 h | Iwazaki, Osamu | Overall: 62 | M: 58 | Cat M40: 17 | |
| 20.-21.09.2025 | Seoul Ultra Trail 100K (KOR) | 110km | |||
| 20:20:28 h | Iwazaki, Osamu | Overall: 92 | M: 81 | Cat M40: 21 | |
| 21.-22.06.2025 | Kaga Spa by UTMB - Kaga Spa Trail Endurance100 (JPN) | 105km | |||
| 22:56:40 h | Iwazaki, Osamu | Overall: 170 | M: 144 | Cat M40: 34 | |
| 2024 | 2 Events, 267 km (More) | ||||
| 12.-13.10.2024 | TransJeju by UTMB 100 (KOR) | 100km | |||
| 19:26:01 h | Iwazaki, Osamu | Overall: 228 | M: 202 | Cat M40: 40 | |
| 26.-27.04.2024 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 38:52:03 h | Iwazaki, Osamu | Overall: 663 | M: 602 | Cat M40: 148 | |
| 2023 | 2 Events, 238.5 km (More) | ||||
| 08.-09.10.2023 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 16:12:43 h | Iwazaki, Osamu | Overall: 708 | M: 646 | Cat M40: 121 | |
| 21.-23.04.2023 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 38:57:13 h | Iwazaki, Osamu | *Tokyo | Overall: 826 | M: 733 | Cat M40: 186 |
| 2019 | 2 Events, 271 km (More) | ||||
| 30.08.-01.09.2019 | Ultra Trail Tour du Mont Blanc (UTMB) (FRA) | 171km | |||
| 43:06:43 h | Iwazaki, Osamu | *Tokyo | Overall: 1029 | M: 953 | Cat M35: 215 |
| 18.-19.05.2019 | Ultra-Trail Australia 100 Km (AUS) | 100km | |||
| 15:53:20 h | Iwazaki, Osamu | Overall: 391 | M: 321 | Cat M35: 74 | |
| 2018 | 4 Events, 457.2 km (More) | ||||
| 17.-18.11.2018 | FunTrails100K Round (JPN) | 106km | |||
| 23:26:12 h | Iwazaki, Osamu | *Tokyo Pref. | Overall: 98 | M: 92 | Cat M35: 27 |
| 07.-08.10.2018 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 17:44:45 h | Iwazaki, Osamu | *Fussa | Overall: 690 | M: 612 | Cat M35: 99 |
| 31.08.-02.09.2018 | Ultra Trail Tour du Mont Blanc (UTMB) (FRA) | 171km | |||
| 44:42:51 h | Iwazaki, Osamu | *Tokyo | Overall: 1397 | M: 1280 | Cat M35: 289 |
| 12.-13.05.2018 | Aso Round Trail (JPN) | 108.7km | |||
| 21:56:52 h | Iwazaki, Osamu | 昭島動物病院 | Overall: 86 | M: 75 | Cat M35: 19 |
| 2017 | 2 Events, 210.7 km (More) | ||||
| 16.-18.09.2017 | Shinetsu Five Mountains Trail 100 mile (JPN) | 102km | |||
| 19:00:37 h | Iwazaki, Osamu | 昭島動物病院 | Overall: 244 | M: 222 | Cat M35: 50 |
| 13.-14.05.2017 | Aso Round Trail (JPN) | 108.7km | |||
| 22:43:05 h | Iwazaki, Osamu | Overall: 51 | M: 44 | Cat M35: 13 | |
| 2016 | 3 Events, 286.5 km (More) | ||||
| 19.-20.11.2016 | FunTrails100K Round (JPN) | 105km | |||
| 23:44:33 h | Iwazaki, Osamu | *Tokyo | Overall: 126 | M: 119 | Cat M23: 26 |
| 09.-10.10.2016 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 14:44:14 h | Iwazaki, Osamu | Overall: 583 | M: 536 | Cat M23: 104 | |
| 18.-19.09.2016 | Shinetsu Five Mountains Trail 110km (JPN) | 110km | |||
| 16:51:28 h | Iwazaki, Osamu | Overall: 170 | M: 155 | Cat M23: 45 | |
| 2015 | 4 Events, 365.5 km (More) | ||||
| 21.-22.11.2015 | FunTrails100K Round (JPN) | 104km | |||
| 22:45:33 h | Iwazaki, Osamu | Overall: 86 | M: 83 | Cat M23: 23 | |
| 31.10.-01.11.2015 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 14:15:30 h | Iwazaki, Osamu | Overall: 757 | M: 714 | Cat M23: 146 | |
| 22.-23.09.2015 | Shinetsu Five Mountains Trail 110km (JPN) | 110km | |||
| 18:38:01 h | Iwazaki, Osamu | Overall: 253 | M: 231 | Cat M23: 71 | |
| 26.07.2015 | Mt. Taisetsu Trail Journey (JPN) | 80km | |||
| 13:46:33 h | Iwazaki, Osamu | Overall: 97 | M: 92 | Cat M23: 36 | |
| 2013 | 1 Event, 160.934 km (More) | ||||
| 26.-28.04.2013 | Ultra-Trail Mount Fuji (UTMF) (JPN) | 100mi | |||
| 41:32:21 h | Iwazaki, Osamu | *Tokyo | Overall: 441 | M: 393 | Cat M23: 90 |
| 2012 | 2 Events, 171.5 km (More) | ||||
| 07.-08.10.2012 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 18:19:55 h | Iwazaki, Osamu | Overall: 1311 | M: 1179 | Cat M23: 282 | |
| 24.06.2012 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 11:54:31 h | Iwazaki, Osamu | *Tokyo | Overall: 1256 | M: 1099 | Cat M23: 162 |
| 2011 | 1 Event, 71.5 km (More) | ||||
| 09.-10.10.2011 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 18:37:25 h | Iwazaki, Osamu | Overall: 1110 | M: 997 | Cat M23: 214 | |
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 | 2017 | 2016 | 2015 | 2013 | 2012 | 2011 | |
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| 100km | 11:54:31 |
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11:54:31
(4468/1389) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2019 | 2018 | 2017 | 2016 | 2015 | 2013 | 2012 | 2011 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hasetsune Cup - Japan Mountain Endurance Race | 6 | 16:12:43 | 17:44:45 | 14:44:14 | 14:15:30 | 18:19:55 | 18:37:25 | |||||
| FunTrails100K Round | 3 | 23:26:12 | 23:44:33 | 22:45:33 | ||||||||
| Ultra-Trail Mount Fuji (UTMF) | 3 | 38:52:03 | 38:57:13 | 41:32:21 | ||||||||
| Aso Round Trail | 2 | 21:56:52 | 22:43:05 | |||||||||
| Shinetsu Five Mountains Trail 110km | 2 | 16:51:28 | 18:38:01 | |||||||||
| Ultra Trail Tour du Mont Blanc (UTMB) | 2 | 43:06:43 | 44:42:51 |