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| Name: | Isawa, Tadashi | 伊澤忠支 |
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| Club: | 武蔵ウルトラマラソンクラブ | ||
| Residence: | Tokyo | ||
| Year of birth: | 1964 | (Cat. german: M60) | |
| Date of birth: | 18.02.1964 | (Cat. internat.: M60) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 526763 | ||
54 search results (45 Events, 6407.916 km). (More)
| 2025 | 4 Events, 513.514 km (More) | ||||
|---|---|---|---|---|---|
| 05.10.2025 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 51.4km | |||
| 7:50:11 h | Isawa, Tadashi | 武蔵umc | Overall: 46 | M: 43 | Cat M60: 1 |
| 17.-18.05.2025 | Trainic World 100 Km in Sai-No-Kuni (JPN) | 100km | |||
| 24:45:52 h | Isawa, Tadashi | 武蔵umc | Overall: 69 | M: 63 | Cat M60: 1 |
| 15.-16.03.2025 | Little Edo Oedo 200k (JPN) | 200km | |||
| 35:00:36 h | Isawa, Tadashi | 武蔵umc | Overall: 155 | M: 126 | Cat M60: 6 |
| 22.-23.02.2025 | Taipei 24hr Ultra Marathon (TPE) | 24h | |||
| 162.114 km | Isawa, Tadashi | Overall: 23 | M: 20 | Cat M60: 2 | |
| 22.-23.02.2025 | Taipei 24hr Ultra Marathon - 100km Split (TPE) | 100km | |||
| 13:10:14 h | Isawa, Tadashi | Overall: 26 | M: 24 | Cat M60: 3 | |
| 22.-23.02.2025 | Taipei 24hr Ultra Marathon - 100mi Split (TPE) | 100mi | |||
| 23:53:11 h | Isawa, Tadashi | Overall: 23 | M: 20 | Cat M60: 2 | |
| 22.-23.02.2025 | Taipei 24hr Ultra Marathon - 12h Split (TPE) | 12h | |||
| 92.352 km | Isawa, Tadashi | Overall: 29 | M: 26 | Cat M60: 3 | |
| 2024 | 6 Events, 628.002 km (More) | ||||
| 01.12.2024 | Trainic world Soto-Chichibu Trail Run 50km (JPN) | 50km | |||
| 8:03:51 h | Isawa, Tadashi | 武蔵umc | Overall: 57 | M: 49 | Cat M60: 2 |
| 06.10.2024 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 51.4km | |||
| 8:00:59 h | Isawa, Tadashi | 武蔵umc | Overall: 46 | M: 40 | Cat M60: 2 |
| 18.-19.05.2024 | Trainic World 100 Km in Sai-No-Kuni (JPN) | 109.2km | |||
| 23:42:17 h | Isawa, Tadashi | Overall: 49 | M: 40 | Cat M60: 2 | |
| 24.03.2024 | Ishinomaki Tozan Marathon 45km (JPN) | 45km | |||
| 5:16:33 h | Isawa, Tadashi | Overall: 44 | M: 41 | Cat M60: 1 | |
| 09.-10.03.2024 | Little Edo Oedo 200k (JPN) | 200km | |||
| 32:08:58 h | Isawa, Tadashi | 武蔵umc | Overall: 80 | M: 70 | Cat M60: 2 |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon - 50mi Split (TPE) | 50mi | |||
| 9:16:31 h | Isawa, Tadashi | Overall: 32 | M: 29 | Cat M60: 1 | |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon - 50km Split (TPE) | 50km | |||
| 5:37:57 h | Isawa, Tadashi | Overall: 40 | M: 34 | Cat M60: 2 | |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon (TPE) | 24h | |||
| 172.402 km | Isawa, Tadashi | Overall: 22 | M: 19 | Cat M60: 2 | |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon - 100km Split (TPE) | 100km | |||
| 11:54:22 h | Isawa, Tadashi | Overall: 29 | M: 25 | Cat M60: 2 | |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon - 100mi Split (TPE) | 100mi | |||
| 21:45:09 h | Isawa, Tadashi | Overall: 22 | M: 19 | Cat M60: 2 | |
| 24.-25.02.2024 | Taipei 24hr Ultra Marathon - 12h Split (TPE) | 12h | |||
| 100.084 km | Isawa, Tadashi | Overall: 29 | M: 23 | Cat M60: 1 | |
| 24.02.2024 | Taipei 24hr Ultra Marathon - 6h Split (TPE) | 6h | |||
| 52.947 km | Isawa, Tadashi | Overall: 39 | M: 33 | Cat M60: 2 | |
| 2023 | 4 Events, 881 km (More) | ||||
| 05.11.2023 | Koshu Alps Haute Route Challenge (JPN) | 68km | |||
| 13:17:05 h | Isawa, Tadashi | Overall: 58 | M: 56 | Cat M55: 4 | |
| 16.07.2023 | OSJ Ontake 100km Ultra Trail (JPN) | 100km | |||
| 16:49:25 h | Isawa, Tadashi | 武蔵umc | Overall: 293 | M: 275 | Cat M55: 20 |
| 30.04.-05.05.2023 | River Road Foot Race 513 Km (JPN) | 513km | |||
| 5d 06:20:22 h | Isawa, Tadashi | Overall: 47 | M: 40 | Cat M55: 14 | |
| 11.-12.03.2023 | Little Edo Oedo 200k (JPN) | 200km | |||
| 33:26:00 h | Isawa, Tadashi | 武蔵umc | Overall: 132 | M: 113 | Cat M55: 18 |
| 2022 | 2 Events, 268 km (More) | ||||
| 06.11.2022 | Koshu Alps Haute Route Challenge (JPN) | 68km | |||
| 12:31:02 h | Isawa, Tadashi | Overall: 44 | M: 41 | Cat M55: 4 | |
| 12.-13.03.2022 | Little Edo Oedo 200k (JPN) | 200km | |||
| 35:40:25 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 184 | M: 152 | Cat M55: 33 |
| 2021 | 2 Events, 570 km (More) | ||||
| 07.11.2021 | Koshu Alps Haute Route Challenge (JPN) | 67km | |||
| 13:50:46 h | Isawa, Tadashi | Overall: 142 | M: 129 | Cat M55: 6 | |
| 30.04.-05.05.2021 | River Road Foot Race 503 Km (JPN) | 503km | |||
| 5d 08:55:37 h | Isawa, Tadashi | Overall: 51 | M: 47 | Cat M55: 10 | |
| 2020 | 2 Events, 272 km (More) | ||||
| 13.12.2020 | Izu Trail Journey (JPN) | 66km | |||
| 10:11:32 h | Isawa, Tadashi | 武蔵umc | Overall: 429 | M: 383 | Cat M55: 13 |
| 22.-23.02.2020 | Little Edo Oedo 205k (JPN) | 206km | |||
| 32:33:44 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 101 | M: 93 | Cat M55: 15 |
| 2019 | 4 Events, 439 km (More) | ||||
| 21.-22.09.2019 | SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup (JPN) | 143km | |||
| 34:08:44 h | Isawa, Tadashi | Overall: 354 | M: 319 | Cat M55: 14 | |
| 13.07.2019 | OSJ Ontake 100km Ultra Trail (JPN) | 100km | |||
| 14:48:25 h | Isawa, Tadashi | Overall: 293 | M: 268 | Cat M55: 8 | |
| 02.06.2019 | Ultramarathon Okumusashi (JPN) | 78km | |||
| 8:50:09 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 444 | M: 380 | Cat M55: 29 |
| 21.04.2019 | Fuji 5 Lakes 118 km Challenge (JPN) | 118km | |||
| 14:15:30 h | Isawa, Tadashi | Overall: 274 | M: 249 | Cat M55: 17 | |
| 2018 | 4 Events, 928.934 km (More) | ||||
| 11.11.2018 | Kanna Mountain Run II (JPN) | 50km | |||
| 7:45:13 h | Isawa, Tadashi | Overall: 7 | M: 7 | Cat M50: 1 | |
| 06.-07.10.2018 | OSJ Koumi 100 (JPN) | 100mi | |||
| 34:33:35 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 74 | M: 68 | Cat M50: 5 |
| 30.04.-05.05.2018 | River Road Foot Race 514 Km (JPN) | 514km | |||
| 5d 03:35:59 h | Isawa, Tadashi | Overall: 40 | M: 35 | Cat M50: 12 | |
| 03.-04.03.2018 | Little Edo Oedo 200k (JPN) | 204km | |||
| 31:36:38 h | Isawa, Tadashi | Overall: 93 | M: 84 | Cat M50: 23 | |
| 2017 | 4 Events, 403.6 km (More) | ||||
| 12.11.2017 | Kanna Mountain Run (JPN) | 50km | |||
| 7:27:38 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 29 | M: 26 | Cat M50: 5 |
| 03.09.2017 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 49.6km | |||
| 7:14:08 h | Isawa, Tadashi | *Tokyo | Overall: 41 | M: 39 | Cat M50: 8 |
| 15.07.2017 | OSJ Ontake 100km Ultra Trail (JPN) | 100km | |||
| 13:19:04 h | Isawa, Tadashi | *Tokyo | Overall: 146 | M: 130 | Cat M50: 16 |
| 04.-05.03.2017 | Little Edo Oedo 200k (JPN) | 204km | |||
| 35:13:14 h | Isawa, Tadashi | Overall: 198 | M: 171 | Cat M50: 33 | |
| 2016 | 4 Events, 618.6 km (More) | ||||
| 03.-04.09.2016 | Trainic World 100 Km in Sai-No-Kuni (JPN) | 110km | |||
| 26:42:31 h | Isawa, Tadashi | Overall: 27 | M: 26 | Cat M50: 5 | |
| 10.07.2016 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 49.6km | |||
| 7:38:02 h | Isawa, Tadashi | Overall: 31 | M: 29 | Cat M50: 6 | |
| 03.-05.05.2016 | River Road Foot Race 255 Km (JPN) | 255km | |||
| 2d 02:42:09 h | Isawa, Tadashi | Overall: 16 | M: 15 | Cat M50: 4 | |
| 05.-06.03.2016 | Little Edo Oedo 200k (JPN) | 204km | |||
| 31:02:47 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 72 | M: 66 | Cat M50: 12 |
| 2015 | 4 Events, 477.1 km (More) | ||||
| 31.10.-01.11.2015 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 15:24:10 h | Isawa, Tadashi | 武蔵umc | Overall: 969 | M: 905 | Cat M50: 74 |
| 20.-21.09.2015 | Karisakatoge beyond Chichibu Run (JPN) | 153km | |||
| 23:51:06 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 92 | M: 86 | Cat M50: 18 |
| 06.09.2015 | Trainic world Ogose-Tokigawa Trail Run 50km (JPN) | 49.6km | |||
| 7:22:04 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 57 | M: 56 | Cat M50: 6 |
| 28.02.-01.03.2015 | Little Edo Oedo 200k (JPN) | 203km | |||
| 33:54:40 h | Isawa, Tadashi | 武蔵umc | Overall: 129 | M: 121 | Cat M50: 19 |
| 2014 | 3 Events, 268.166 km (More) | ||||
| 06.07.2014 | 8-Hour Endurance Race Tokorozawa (JPN) | 8h | |||
| 68.166 km | Isawa, Tadashi | 奥武蔵UMC | Overall: 65 | M: 52 | Cat M50: 8 |
| 20.04.2014 | Fuji 5 Lakes 100 km Challenge (JPN) | 100km | |||
| 11:37:41 h | Isawa, Tadashi | MRC | Overall: 337 | M: 309 | Cat M50: 46 |
| 06.04.2014 | Tsurunuma 100 km (JPN) | 100km | |||
| 10:49:34 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 31 | M: 28 | Cat M50: 6 |
| 2013 | 1 Event, 70 km (More) | ||||
| 13.04.2013 | Toda Saiko 70 km (JPN) | 70km | |||
| 6:56:49 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 65 | M: 62 | Cat M45: 10 |
| 2012 | 1 Event, 70 km (More) | ||||
| 07.04.2012 | Toda Saiko 70 km (JPN) | 70km | |||
| 7:51:26 h | Isawa, Tadashi | 武蔵ウルトラマラソンクラブ | Overall: 116 | M: 107 | Cat M45: 24 |
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 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | |
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| 50km | 5:37:57 |
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5:37:57
(10480/94) |
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| 50mi | 9:16:31 |
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9:16:31
(566/16) |
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| 100km | 11:54:22 |
13:10:14
(6301/2894) |
11:54:22
(4004/1473) |
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| 100mi | 21:45:09 |
23:53:11
(691/18) |
21:45:09
(409/15) |
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| 6h | 52.947 |
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52.947
(1986/23) |
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| 12h | 100.084 |
92.352
(1213/73) |
100.084
(780/20) |
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| 24h | 172.402 |
162.114
(1091/79) |
172.402
(718/46) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Little Edo Oedo 200k | 9 | 35:00:36 | 32:08:58 | 33:26:00 | 35:40:25 | 32:33:44 | 31:36:38 | 35:13:14 | 31:02:47 | 33:54:40 | |||||
| Trainic world Ogose-Tokigawa Trail Run 50km | 5 | 7:50:11 | 8:00:59 | 7:14:08 | 7:38:02 | 7:22:04 | |||||||||
| Koshu Alps Haute Route Challenge | 3 | 13:17:05 | 12:31:02 | 13:50:46 | |||||||||||
| River Road Foot Race 514 Km | 3 | 126:20:22 | 128:55:37 | 123:35:59 | |||||||||||
| Trainic World 100 Km in Sai-No-Kuni | 3 | 24:45:52 | 23:42:17 | 26:42:31 | |||||||||||
| OSJ Ontake 100km Ultra Trail | 3 | 16:49:25 | 14:48:25 | 13:19:04 | |||||||||||
| Taipei 24hr Ultra Marathon | 2 | 162.114 | 172.402 | ||||||||||||
| Toda Saiko 70 km | 2 | 6:56:49 | 7:51:26 |