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| Name: | Hasegawa, Seiko | 長谷川聖子 |
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| Club: | 日医ジョガーズ | ||
| Residence: | Aomori Pref. | ||
| Year of birth: | 1967 | (Cat. german: W55) | |
| Date of birth: | 11.09.1967 | (Cat. internat.: W55) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 92348 | ||
72 search results (72 Events, 10515.52 km). (More)
| 2025 | 4 Events, 617 km (More) | ||||
|---|---|---|---|---|---|
| 19.-21.07.2025 | Round of the Boso Peninsula 210K (JPN) | 210km | |||
| 40:15:27 h | Hasegawa, Seiko | Overall: 6 | F: 3 | Cat W55: 1 | |
| 08.06.2025 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 12:12:14 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 291 | F: 38 | Cat W55: 4 |
| 26.-30.04.2025 | Reiheishi Michi Kyoto to Nikko - 207 km (JPN) | 207km | |||
| 2d 01:20:51 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 2 | F: 1 | Cat W55: 1 |
| 05.-06.04.2025 | Lake Biwa Kaizu Sakura Maranic - 100 km (JPN) | 100km | |||
| 16:08:00 h | Hasegawa, Seiko | Overall: 11 | F: 6 | Cat W55: 3 | |
| 2024 | 9 Events, 1518.25 km (More) | ||||
| 19.-20.10.2024 | Santo Ultra Maranic - Santo Course (JPN) | 200km | |||
| 32:38:00 h | Hasegawa, Seiko | Overall: 3 | F: 1 | Cat W55: 1 | |
| 15.-16.09.2024 | Utsukushima Fukushima Journey Run 128K (JPN) | 128km | |||
| 19:08:17 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 9 | F: 2 | Cat W55: 1 |
| 23.-25.08.2024 | Donan Story Journey Run (JPN) | 210km | |||
| 37:07:45 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 20 | F: 3 | Cat W55: 1 |
| 13.-15.07.2024 | Michinoku Tsugaru Journey Run 266K (JPN) | 266km | |||
| 2d 01:39:19 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 33 | F: 4 | Cat W55: 1 |
| 09.06.2024 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 12:16:50 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 320 | F: 48 | Cat W55: 7 |
| 20.-22.05.2024 | Hirosaki 48h Ultra Run (JPN) | 48h | |||
| 181.250 km | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 15 | F: 4 | Cat W55: 3 |
| 03.-05.05.2024 | River Road Foot Race 251 Km (JPN) | 251km | |||
| 45:51:49 h | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 21 | F: 6 | Cat W55: 3 |
| 06.-07.04.2024 | Yagurazawa Round Trip Pre-Tournament (JPN) | 100km | |||
| 16:35:02 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 13 | F: 3 | Cat W55: 1 |
| 16.03.2024 | Arakawa Riverside Journey Stage Race - Stage 1 (JPN) | 82km | |||
| 10:13:47 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 33 | F: 7 | Cat W55: 3 |
| 2023 | 5 Events, 1353 km (More) | ||||
| 18.04.-29.10.2023 | Across Honshu R9 Foot Race (JPN) | 582km | |||
| 6d 10:07:19 h | Hasegawa, Seiko | Overall: 14 | F: 2 | Cat W55: 1 | |
| 15.-17.07.2023 | Michinoku Tsugaru Journey Run 263K (JPN) | 266km | |||
| 45:33:09 h | Hasegawa, Seiko | 武蔵ｳﾙﾄﾗﾏﾗｿﾝｸﾗﾌﾞ | Overall: 13 | F: 2 | Cat W55: 1 |
| 17.-18.06.2023 | Nikko Sennin Concentric Highway Journey Run (JPN) | 159km | |||
| 29:39:57 h | Hasegawa, Seiko | Overall: 34 | F: 4 | Cat W55: 1 | |
| 26.-27.05.2023 | Hirosaki 12h Ultra Run (JPN) | 12h | |||
| 95.000 km | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 6 | F: 4 | Cat W55: 1 |
| 03.-05.05.2023 | River Road Foot Race 251 Km (JPN) | 251km | |||
| 2d 02:30:09 h | Hasegawa, Seiko | Overall: 27 | F: 6 | Cat W55: 3 | |
| 2022 | 4 Events, 929.67 km (More) | ||||
| 12.11.2022 | Miyagi Yumeguri Ultra Run (JPN) | 47.2km | |||
| 5:31:00 h | Hasegawa, Seiko | Overall: 9 | F: 4 | Cat W55: 2 | |
| 22.-31.10.2022 | Across Honshu R8 Foot Race (JPN) | 535km | |||
| 6d 05:29:00 h | Hasegawa, Seiko | Overall: 4 | F: 1 | Cat W55: 1 | |
| 22.-23.05.2022 | Hirosaki 24h Ultra Run (JPN) | 24h | |||
| 172.470 km | Hasegawa, Seiko | 武蔵ｳﾙﾄﾗﾏﾗｿﾝｸﾗﾌﾞ | Overall: 14 | F: 3 | Cat W50: 1 |
| 28.04.-02.05.2022 | Reiheishi Michi Kyoto to Nikko - 175 km (JPN) | 175km | |||
| 45:03:00 h | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 6 | F: 2 | Cat W50: 1 |
| 2021 | 1 Event, 430 km (More) | ||||
| 23.04.-30.10.2021 | Across Honshu R7 Foot Race (JPN) | 430km | |||
| 5d 07:59:00 h | Hasegawa, Seiko | Overall: 9 | F: 3 | Cat W50: 1 | |
| 2020 | 1 Event, 100 km (More) | ||||
| 12.01.2020 | Yakushima Ultramarathon 100 Km (JPN) | 100km | |||
| 13:46:34 h | Hasegawa, Seiko | Overall: 86 | F: 16 | Cat W50: 4 | |
| 2019 | 7 Events, 1034.6 km (More) | ||||
| 02.-04.11.2019 | Setouchi Angya 2019 (JPN) | 222km | |||
| 39:34:00 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 25 | F: 5 | Cat W50: 2 |
| 14.-16.09.2019 | Utsukushima Fukushima Journey Run 250K (JPN) | 251km | |||
| 43:23:35 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 22 | F: 4 | Cat W50: 2 |
| 15.-16.06.2019 | Nikko Sennin Concentric Journey Run (JPN) | 161.6km | |||
| 26:45:13 h | Hasegawa, Seiko | 武蔵ｳﾙﾄﾗﾏﾗｿﾝｸﾗﾌﾞ | Overall: 39 | F: 6 | Cat W50: 1 |
| 19.05.2019 | Yatsugatake Nobeyama 100 km (JPN) | 100km | |||
| 13:17:46 h | Hasegawa, Seiko | Overall: 965 | F: 111 | Cat W50: 18 | |
| 28.04.2019 | Okukumano 100 Km Ultramarathon (JPN) | 100km | |||
| 12:23:27 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 161 | F: 18 | Cat W50: 3 |
| 24.03.2019 | Ibaraki 100k Ultra Marathon (JPN) | 100km | |||
| 11:46:38 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 257 | F: 21 | Cat W50: 2 |
| 20.01.2019 | Miyako 100 Km Ultramarathon (JPN) | 100km | |||
| 12:29:30 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 142 | F: 26 | Cat W50: 7 |
| 2018 | 5 Events, 633 km (More) | ||||
| 21.10.2018 | Noto Peninsula 100 km Ultra Marathon (JPN) | 100km | |||
| 12:17:59 h | Hasegawa, Seiko | *Hirosaki Aomori Pref. | Overall: 126 | F: 20 | Cat W50: 7 |
| 14.-16.07.2018 | Michinoku Tsugaru Journey Run 263K (JPN) | 263km | |||
| 2d 01:44:07 h | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 69 | F: 8 | Cat W50: 2 |
| 10.06.2018 | Koyasan and Ryujin-Onsen 100 Km Ultra Marathon (JPN) | 100km | |||
| 12:37:19 h | Hasegawa, Seiko | Overall: 103 | F: 10 | Cat W50: 6 | |
| 14.04.2018 | Toda Saiko 70 km (JPN) | 70km | |||
| 7:15:46 h | Hasegawa, Seiko | 武蔵ウルトラマラソンクラブ | Overall: 177 | F: 20 | Cat W50: 3 |
| 21.01.2018 | Miyako 100 Km Ultramarathon (JPN) | 100km | |||
| 11:34:28 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 77 | F: 12 | Cat W50: 5 |
| 2017 | 8 Events, 1070 km (More) | ||||
| 21.10.2017 | Inagawa 100km Ultra-Marathon (JPN) | 100km | |||
| 13:00:27 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 49 | F: 7 | Cat W50: 4 |
| 24.09.2017 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:12:22 h | Hasegawa, Seiko | *Aomori | Overall: 123 | F: 15 | Cat W50: 6 |
| 10.09.2017 | 100 km Ultramarathon Hakusan-Shirakawago (JPN) | 100km | |||
| 12:22:02 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 192 | F: 20 | Cat W45: 2 |
| 15.-17.07.2017 | Michinoku Tsugaru Journey Run 250K (JPN) | 250km | |||
| 43:50:15 h | Hasegawa, Seiko | Overall: 27 | F: 2 | Cat W45: 1 | |
| 11.06.2017 | Hida Takayama 100 km Ultramarathon (JPN) | 100km | |||
| 12:49:08 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 856 | F: 89 | Cat W45: 20 |
| 02.-04.05.2017 | Yamaguchi 100 Hagi-O-Kan Maranic 250 km (JPN) | 250km | |||
| 44:52:29 h | Hasegawa, Seiko | 日医ザョガーズ | Overall: 91 | F: 14 | Cat W45: 3 |
| 08.04.2017 | Toda Saiko 70 km (JPN) | 70km | |||
| 7:05:16 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 177 | F: 21 | Cat W45: 2 |
| 15.01.2017 | Miyako 100 Km Ultramarathon (JPN) | 100km | |||
| 11:55:38 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 137 | F: 29 | Cat W45: 5 |
| 2016 | 7 Events, 920 km (More) | ||||
| 16.10.2016 | Noto Peninsula 100 km Ultra Marathon (JPN) | 100km | |||
| 12:02:00 h | Hasegawa, Seiko | *Hirosaki Aomori Pref. | Overall: 81 | F: 13 | Cat W45: 2 |
| 25.09.2016 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:16:20 h | Hasegawa, Seiko | *Aomori | Overall: 132 | F: 13 | Cat W45: 2 |
| 17.-18.07.2016 | Michinoku Tsugaru Journey Run 200K (JPN) | 200km | |||
| 31:55:45 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 32 | F: 5 | Cat W45: 1 |
| 12.06.2016 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 12:02:11 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 363 | F: 39 | Cat W45: 4 |
| 02.-04.05.2016 | Yamaguchi 100 Hagi-O-Kan Maranic 250 km (JPN) | 250km | |||
| 42:33:41 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 63 | F: 9 | Cat W45: 2 |
| 09.04.2016 | Toda Saiko 70 km (JPN) | 70km | |||
| 7:44:28 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 214 | F: 26 | Cat W45: 7 |
| 27.03.2016 | Osaka Yodogawa 100 Km Ultra Marathon (JPN) | 100km | |||
| 11:23:54 h | Hasegawa, Seiko | Overall: 96 | F: 8 | Cat W45: 3 | |
| 2015 | 4 Events, 440 km (More) | ||||
| 18.10.2015 | River Shimanto 100km (JPN) | 100km | |||
| 12:18:11 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 507 | F: 68 | Cat W45: 9 |
| 27.09.2015 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:53:48 h | Hasegawa, Seiko | *Aomori | Overall: 316 | F: 51 | Cat W45: 14 |
| 14.06.2015 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 11:26:37 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 259 | F: 28 | Cat W45: 4 |
| 03.-04.05.2015 | Yamaguchi 100 Hagi-O-Kan Maranic 140 km (JPN) | 140km | |||
| 22:18:24 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 51 | F: 5 | Cat W45: 1 |
| 2014 | 3 Events, 270 km (More) | ||||
| 28.09.2014 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:10:18 h | Hasegawa, Seiko | *Aomori | Overall: 179 | F: 14 | Cat W45: 5 |
| 08.06.2014 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 11:57:01 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 388 | F: 33 | Cat W45: 5 |
| 04.05.2014 | Yamaguchi 100 Hagi-O-Kan Maranic 70 km (JPN) | 70km | |||
| 9:16:20 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 119 | F: 19 | Cat W45: 5 |
| 2013 | 2 Events, 200 km (More) | ||||
| 09.06.2013 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 12:21:01 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 400 | F: 39 | Cat W45: 7 |
| 13.01.2013 | Miyako 100 Km Ultramarathon (JPN) | 100km | |||
| 13:18:11 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 258 | F: 44 | Cat W45: 6 |
| 2012 | 2 Events, 200 km (More) | ||||
| 23.09.2012 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:57:10 h | Hasegawa, Seiko | *Aomori | Overall: 340 | F: 44 | Cat W45: 17 |
| 10.06.2012 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 11:54:38 h | Hasegawa, Seiko | 日医ジョガーズ | Overall: 342 | F: 38 | Cat W40: 8 |
| 2011 | 3 Events, 300 km (More) | ||||
| 25.09.2011 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 11:52:38 h | Hasegawa, Seiko | *Aomori | Overall: 260 | F: 31 | Cat W40: 3 |
| 12.06.2011 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 12:28:23 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 288 | F: 23 | Cat W40: 5 |
| 30.04.2011 | Fuji 5 Lakes 100 km Challenge (JPN) | 100km | |||
| 13:40:49 h | Hasegawa, Seiko | *Aomori | Overall: 714 | F: 99 | Cat W40: 14 |
| 2010 | 2 Events, 200 km (More) | ||||
| 26.09.2010 | Akita Nairiku 100km Marathon (JPN) | 100km | |||
| 12:53:31 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 665 | F: 100 | Cat W40: 9 |
| 13.06.2010 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 13:31:33 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 317 | F: 31 | Cat W40: 2 |
| 2009 | 2 Events, 150 km (More) | ||||
| 27.09.2009 | Akita Nairiku 50km Marathon (JPN) | 50km | |||
| 4:45:53 h | Hasegawa, Seiko | *Aomori | Overall: 33 | F: 5 | Cat W40: 1 |
| 14.06.2009 | Iwate Ginga 100km Marathon Challenge (JPN) | 100km | |||
| 13:06:10 h | Hasegawa, Seiko | *Aomori | Overall: 297 | F: 28 | Cat W40: 5 |
| 2008 | 2 Events, 100 km (More) | ||||
| 28.09.2008 | Akita Nairiku 50km Marathon (JPN) | 50km | |||
| 4:49:07 h | Hasegawa, Seiko | *Aomori | Overall: 25 | F: 3 | Cat W40: 1 |
| 08.06.2008 | Iwate Ginga 50km Marathon Challenge (JPN) | 50km | |||
| 5:37:24 h | Hasegawa, Seiko | *Aomori Pref. | Overall: 41 | F: 5 | Cat W40: 2 |
| 2007 | 1 Event, 50 km (More) | ||||
| 22.09.2007 | Akita Nairiku 50km Marathon (JPN) | 50km | |||
| 4:53:33 h | Hasegawa, Seiko | *Aomori | Overall: 50 | F: 14 | Cat W40: 3 |
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 | 2011 | 2010 | 2009 | 2008 | 2007 | |
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| 100km | 12:18:11 |
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12:37:19
(1136/445) |
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12:18:11
(916/368) |
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| 48h | 181.250 |
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181.250
(132/13) |
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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 | 2011 | 2010 | 2009 | 2008 | 2007 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Iwate Ginga 100km Marathon Challenge | 10 | 12:12:14 | 12:16:50 | 12:02:11 | 11:26:37 | 11:57:01 | 12:21:01 | 11:54:38 | 12:28:23 | 13:31:33 | 13:06:10 | |||||||||
| Akita Nairiku 100km Marathon | 7 | 11:12:22 | 11:16:20 | 11:53:48 | 11:10:18 | 11:57:10 | 11:52:38 | 12:53:31 | ||||||||||||
| Michinoku Tsugaru Journey Run 250K | 4 | 49:39:19 | 45:33:09 | 49:44:07 | 43:50:15 | |||||||||||||||
| Miyako 100 Km Ultramarathon | 4 | 12:29:30 | 11:34:28 | 11:55:38 | 13:18:11 | |||||||||||||||
| Akita Nairiku 50km Marathon | 3 | 4:45:53 | 4:49:07 | 4:53:33 | ||||||||||||||||
| Toda Saiko 70 km | 3 | 7:15:46 | 7:05:16 | 7:44:28 | ||||||||||||||||
| Nikko Sennin Concentric Journey Run | 2 | 29:39:57 | 26:45:13 | |||||||||||||||||
| River Road Foot Race 251 Km | 2 | 45:51:49 | 50:30:09 | |||||||||||||||||
| Noto Peninsula 100 km Ultra Marathon | 2 | 12:17:59 | 12:02:00 | |||||||||||||||||
| Yamaguchi 100 Hagi-O-Kan Maranic 250 km | 2 | 44:52:29 | 42:33:41 |