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| Name: | Iwasa, Ai | 岩佐亜生 |
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| Club: | 積善病院 | ||
| Residence: | Okayama Pref. | ||
| Year of birth: | 1974 | (Cat. german: W50) | |
| Date of birth: | 26.02.1974 | (Cat. internat.: W50) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 603980 | ||
34 search results (34 Events, 5065.628 km). (More)
| 2025 | 2 Events, 260.934 km (More) | ||||
|---|---|---|---|---|---|
| 13.-15.09.2025 | Shinetsu Five Mountains Trail 100 mile (JPN) | 100mi | |||
| 32:30:17 h | Iwasa, Ai | Overall: 268 | F: 28 | Cat W50: 7 | |
| 29.06.2025 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 10:20:37 h | Iwasa, Ai | Overall: 416 | F: 39 | Cat W50: 7 | |
| 2024 | 4 Events, 1235.868 km (More) | ||||
| 15.-18.11.2024 | Okinawa Hontō survival run (JPN) | 400km | |||
| 2d 23:26:57 h | Iwasa, Ai | Overall: 11 | F: 3 | Cat W50: 3 | |
| 14.-16.09.2024 | Shinetsu Five Mountains Trail 100 mile (JPN) | 100mi | |||
| 28:53:42 h | Iwasa, Ai | *Okayama Pref. | Overall: 266 | F: 37 | Cat W50: 9 |
| 08.-09.06.2024 | Miyakojima Ultra 100 Miles (JPN) | 100mi | |||
| 25:39:02 h | Iwasa, Ai | Overall: 5 | F: 1 | Cat W50: 1 | |
| 30.04.-05.05.2024 | River Road Foot Race 514 Km (JPN) | 514km | |||
| 5d 05:17:46 h | Iwasa, Ai | *Okayama Pref. | Overall: 45 | F: 9 | Cat W50: 3 |
| 2023 | 6 Events, 1287.768 km (More) | ||||
| 24.-27.11.2023 | Okinawa Hontō survival run (JPN) | 400km | |||
| 2d 22:34:35 h | Iwasa, Ai | Overall: 21 | F: 3 | Cat W45: 2 | |
| 16.-18.09.2023 | Shinetsu Five Mountains Trail 100 mile (JPN) | 100mi | |||
| 32:35:44 h | Iwasa, Ai | *Okayama Pref. | Overall: 220 | F: 28 | Cat W45: 10 |
| 19.-20.08.2023 | 24-hour relay & solo marathon Kobe (JPN) | 24h | |||
| 147.900 km | Iwasa, Ai | Overall: 25 | F: 6 | Cat W45: 3 | |
| 03.-05.05.2023 | River Road Foot Race 251 Km (JPN) | 251km | |||
| 2d 02:30:09 h | Iwasa, Ai | Overall: 25 | F: 6 | Cat W45: 3 | |
| 21.-23.04.2023 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 37:50:54 h | Iwasa, Ai | 積善病院 | Overall: 714 | F: 79 | Cat W45: 18 |
| 28.-29.01.2023 | Okinawa 58 runs 100miles (JPN) | 100mi | |||
| 22:23:03 h | Iwasa, Ai | Overall: 8 | F: 3 | Cat W45: 2 | |
| 2022 | 4 Events, 497.526 km (More) | ||||
| 19.-21.11.2022 | Last Samurai Standing Backyard Ultra - Shimane (JPN) | 55h | |||
| 214.592 km | Iwasa, Ai | Overall: 7 | F: 1 | Cat W45: 1 | |
| 17.-19.09.2022 | Shinetsu Five Mountains Trail 100 mile (JPN) | 100mi | |||
| 32:27:23 h | Iwasa, Ai | 積善病院 | Overall: 172 | F: 24 | Cat W45: 6 |
| 17.07.2022 | Yamaguchi Hagi Return (JPN) | 65km | |||
| 8:18:33 h | Iwasa, Ai | *Okayama Pref. | Overall: 9 | F: 1 | Cat W45: 1 |
| 05.06.2022 | Nagi Peaks Tough Trail Challenge (JPN) | 57km | |||
| 10:23:25 h | Iwasa, Ai | *Okayama Pref. | Overall: 59 | F: 3 | Cat W45: 3 |
| 2021 | 2 Events, 247.532 km (More) | ||||
| 20.-22.11.2021 | Last Samurai Standing Backyard Ultra - Shimane (JPN) | 31h | |||
| 147.532 km | Iwasa, Ai | Overall: 8 | F: 1 | Cat W45: 1 | |
| 18.07.2021 | Yamaguchi Hagi Return (JPN) | 100km | |||
| 13:31:50 h | Iwasa, Ai | Overall: 45 | F: 4 | Cat W45: 1 | |
| 2019 | 4 Events, 326 km (More) | ||||
| 15.-16.09.2019 | Shinetsu Five Mountains Trail 110km (JPN) | 110km | |||
| 21:07:56 h | Iwasa, Ai | *Okayama Pref. | Overall: 229 | F: 35 | Cat W45: 5 |
| 07.09.2019 | Miyagi Yumeguri Ultra Marathon - 60 km (JPN) | 60km | |||
| 8:44:21 h | Iwasa, Ai | Overall: 9 | F: 6 | Cat W45: 3 | |
| 16.06.2019 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 10:48:58 h | Iwasa, Ai | Overall: 84 | F: 16 | Cat W45: 5 | |
| 23.-24.03.2019 | Mt. Rocco Cannonball Run - 56 km Night Speed (JPN) | 56km | |||
| 9:51:00 h | Iwasa, Ai | 岩佐亜生 | Overall: 65 | F: 15 | Cat W45: 3 |
| 2018 | 2 Events, 200 km (More) | ||||
| 16.12.2018 | Okinawa 100km Ultramarathon (JPN) | 100km | |||
| 11:42:25 h | Iwasa, Ai | *Okayama Pref. | Overall: 104 | F: 14 | Cat W40: 6 |
| 17.06.2018 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 11:43:14 h | Iwasa, Ai | Overall: 94 | F: 15 | Cat W40: 3 | |
| 2017 | 5 Events, 540 km (More) | ||||
| 01.10.2017 | Yasaka Ultra Marathon in Hamada - 100 km (JPN) | 100km | |||
| 11:44:47 h | Iwasa, Ai | Overall: 15 | F: 1 | Cat W40: 1 | |
| 18.06.2017 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 13:43:50 h | Iwasa, Ai | Overall: 259 | F: 49 | Cat W40: 8 | |
| 11.06.2017 | Hida Takayama 100 km Ultramarathon (JPN) | 100km | |||
| 13:29:37 h | Iwasa, Ai | *Okayama Pref. | Overall: 1188 | F: 136 | Cat W40: 23 |
| 03.-04.05.2017 | Yamaguchi 100 Hagi-O-Kan Maranic 140 km (JPN) | 140km | |||
| 22:57:17 h | Iwasa, Ai | *Okayama Pref. | Overall: 179 | F: 38 | Cat W40: 9 |
| 15.01.2017 | Miyako 100 Km Ultramarathon (JPN) | 100km | |||
| 11:44:06 h | Iwasa, Ai | *Okayama Pref. | Overall: 122 | F: 24 | Cat W40: 2 |
| 2016 | 2 Events, 170 km (More) | ||||
| 19.06.2016 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 11:57:24 h | Iwasa, Ai | Overall: 118 | F: 16 | Cat W40: 2 | |
| 04.05.2016 | Yamaguchi 100 Hagi-O-Kan Maranic 70 km (JPN) | 70km | |||
| 9:55:58 h | Iwasa, Ai | *Okayama Pref. | Overall: 127 | F: 28 | Cat W40: 7 |
| 2015 | 1 Event, 100 km (More) | ||||
| 21.06.2015 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 11:22:14 h | Iwasa, Ai | Overall: 103 | F: 16 | Cat W40: 3 | |
| 2014 | 1 Event, 100 km (More) | ||||
| 15.06.2014 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 12:42:00 h | Iwasa, Ai | *Okayama Pref. | Overall: 147 | F: 23 | Cat W40: 5 |
| 2013 | 1 Event, 100 km (More) | ||||
| 16.06.2013 | Okinoshima 100km Ultra Marathon (JPN) | 100km | |||
| 14:10:44 h | Iwasa, Ai | *Okayama Pref. | Overall: 269 | F: 39 | Cat W35: 5 |
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 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | |
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| 100km | 10:20:37 |
10:20:37
(284/68) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Okinoshima 100km Ultra Marathon | 7 | 10:48:58 | 11:43:14 | 13:43:50 | 11:57:24 | 11:22:14 | 12:42:00 | 14:10:44 | |||||
| Shinetsu Five Mountains Trail 100 mile | 4 | 32:30:17 | 28:53:42 | 32:35:44 | 32:27:23 | ||||||||
| Last Samurai Standing Backyard Ultra - Shimane | 2 | 214.592 | 147.532 | ||||||||||
| Okinawa Hontō survival run | 2 | 71:26:57 | 70:34:35 |