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| Name: | Okamoto, Naoki | 岡本直樹 |
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| Club: | 東京陸上競技協会 | ||
| Residence: | Tokyo | ||
| Year of birth: | 1970 | (Cat. german: M55) | |
| Date of birth: | 06.07.1970 | (Cat. internat.: M55) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 214679 | ||
38 search results (36 Events, 4413.586 km). (More)
| 2026 | 2 Events, 200 km (More) | ||||
|---|---|---|---|---|---|
| 28.06.2026 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:48:41 h | Okamoto, Naoki | Overall: 158 | M: 146 | Cat M55: 9 | |
| 31.05.2026 | Nara Ultra Marathon (JPN) | 100km | |||
| 9:43:52 h | Okamoto, Naoki | Overall: 108 | M: 104 | Cat M55: 2 | |
| 2025 | 2 Events, 200 km (More) | ||||
| 29.06.2025 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 9:51:41 h | Okamoto, Naoki | Overall: 298 | M: 272 | Cat M50: 40 | |
| 20.04.2025 | 100 km Ultra Maranic Osaka (JPN) | 100km | |||
| 10:04:43 h | Okamoto, Naoki | Overall: 22 | M: 18 | Cat M50: 1 | |
| 2024 | 1 Event, 100 km (More) | ||||
| 30.06.2024 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 10:56:12 h | Okamoto, Naoki | Overall: 550 | M: 492 | Cat M50: 82 | |
| 2023 | 1 Event, 100 km (More) | ||||
| 25.06.2023 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:44:57 h | Okamoto, Naoki | Overall: 77 | M: 69 | Cat M50: 9 | |
| 2019 | 1 Event, 100 km (More) | ||||
| 30.06.2019 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 9:45:07 h | Okamoto, Naoki | Overall: 312 | M: 283 | Cat M45: 63 | |
| 2018 | 1 Event, 100 km (More) | ||||
| 24.06.2018 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 10:46:42 h | Okamoto, Naoki | Overall: 699 | M: 620 | Cat M45: 140 | |
| 2017 | 4 Events, 592.647 km (More) | ||||
| 11.-12.11.2017 | Jingu Gaien 24 Hour Challenge (JPN) | 24h | |||
| 164.647 km | Okamoto, Naoki | Overall: 68 | M: 51 | Cat M45: 16 | |
| 25.06.2017 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:13:36 h | Okamoto, Naoki | 東京陸上競技協会 | Overall: 50 | M: 45 | Cat M45: 8 |
| 04.06.2017 | Ultramarathon Okumusashi (JPN) | 78km | |||
| 6:11:38 h | Okamoto, Naoki | チーム100マイル | Overall: 12 | M: 12 | Cat M45: 2 |
| 22.-24.04.2017 | Sakura Michi Kokusai Nature Run (JPN) | 250km | |||
| 26:52:56 h | Okamoto, Naoki | Overall: 3 | M: 3 | Cat M45: 2 | |
| 2016 | 4 Events, 576.202 km (More) | ||||
| 17.-18.12.2016 | Jingu Gaien 24 Hour Challenge (JPN) | 24h | |||
| 232.202 km | Okamoto, Naoki | Overall: 9 | M: 9 | Cat M45: 1 | |
| 18.-19.09.2016 | Karisakatoge beyond Chichibu Run (JPN) | 144km | |||
| 16:22:59 h | Okamoto, Naoki | Overall: 5 | M: 5 | Cat M45: 2 | |
| 26.06.2016 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:13:49 h | Okamoto, Naoki | 東京陸連 | Overall: 68 | M: 63 | Cat M45: 6 |
| 22.05.2016 | Yatsugatake Nobeyama 100 km (JPN) | 100km | |||
| 9:04:48 h | Okamoto, Naoki | チーム凰 | Overall: 9 | M: 9 | Cat M45: 2 |
| 2015 | 2 Events, 479.799 km (More) | ||||
| 19.-20.12.2015 | Jingu Gaien 24 Hour Challenge (JPN) | 24h | |||
| 233.799 km | Okamoto, Naoki | Overall: 4 | M: 4 | Cat M45: 1 | |
| 25.-26.09.2015 | Spartathlon (GRE) | 246km | |||
| 31:21:49 h | Okamoto, Naoki | Overall: 45 | M: 39 | Cat M45: 13 | |
| 2014 | 5 Events, 676.532 km (More) | ||||
| 08.-09.11.2014 | Jingu Gaien 24 Hour Challenge - 6h Split (JPN) | 6h | |||
| 60.930 km | Okamoto, Naoki | 東京陸協 | Overall: 39 | M: 35 | Cat M40: 4 |
| 08.-09.11.2014 | Jingu Gaien 24 Hour Challenge -12h Split (JPN) | 12h | |||
| 116.561 km | Okamoto, Naoki | 東京陸協 | Overall: 29 | M: 26 | Cat M40: 3 |
| 08.-09.11.2014 | Jingu Gaien 24 Hour Challenge (JPN) | 24h | |||
| 202.098 km | Okamoto, Naoki | 東京陸協 | Overall: 24 | M: 22 | Cat M40: 3 |
| 12.-13.10.2014 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 11:10:34 h | Okamoto, Naoki | 志賀国際特許 | Overall: 202 | M: 188 | Cat M40: 37 |
| 14.-15.09.2014 | Karisakatoge beyond Chichibu Run (JPN) | 142km | |||
| 19:47:37 h | Okamoto, Naoki | チーム凰 | Overall: 42 | M: 40 | Cat M40: 9 |
| 29.06.2014 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:58:20 h | Okamoto, Naoki | 東京陸上競技協会 | Overall: 81 | M: 75 | Cat M40: 17 |
| 25.-27.04.2014 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 100mi | |||
| 43:13:30 h | Okamoto, Naoki | *Tokyo | Overall: 568 | M: 505 | Cat M40: 131 |
| 2013 | 5 Events, 496.406 km (More) | ||||
| 09.-10.11.2013 | Jingu Gaien 24 Hour Challenge (JPN) | 24h | |||
| 192.466 km | Okamoto, Naoki | Overall: 31 | M: 26 | Cat M40: 6 | |
| 13.-14.10.2013 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 10:29:15 h | Okamoto, Naoki | Overall: 131 | M: 122 | Cat M40: 19 | |
| 14.-15.09.2013 | Hiratsuka 24 hour race (JPN) | 24h | |||
| 48.440 km | Okamoto, Naoki | Overall: 79 | M: 68 | Cat M40: 15 | |
| 30.06.2013 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 8:54:47 h | Okamoto, Naoki | 志賀国際特許 | Overall: 106 | M: 100 | Cat M40: 15 |
| 26.-27.04.2013 | Shizuoka to Yamanashi (STY) (JPN) | 84km | |||
| 14:20:01 h | Okamoto, Naoki | *Tokyo | Overall: 81 | M: 77 | Cat M40: 13 |
| 2012 | 3 Events, 322 km (More) | ||||
| 16.-17.09.2012 | Shinetsu Five Mountains Trail 110km (JPN) | 110km | |||
| 18:21:29 h | Okamoto, Naoki | Overall: 144 | M: 144 | Cat M40: 39 | |
| 24.06.2012 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 10:32:57 h | Okamoto, Naoki | *Tokyo | Overall: 519 | M: 465 | Cat M40: 99 |
| 22.04.2012 | Fuji 5 Lakes 112 km Challenge (JPN) | 112km | |||
| 13:25:29 h | Okamoto, Naoki | Overall: 235 | M: 221 | Cat M40: 41 | |
| 2011 | 1 Event, 100 km (More) | ||||
| 26.06.2011 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 11:32:44 h | Okamoto, Naoki | *Tokyo | Overall: 872 | M: 768 | Cat M40: 138 |
| 2010 | 2 Events, 200 km (More) | ||||
| 27.06.2010 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 12:58:39 h | Okamoto, Naoki | *Tokyo | Overall: 1603 | M: 1369 | Cat M35: 198 |
| 25.04.2010 | Fuji 5 Lakes 100 km Challenge (JPN) | 100km | |||
| 13:50:04 h | Okamoto, Naoki | Overall: 706 | M: 595 | Cat M35: 76 | |
| 2009 | 2 Events, 170 km (More) | ||||
| 28.06.2009 | Lake Saroma 100 Km Ultramarathon (JPN) | 100km | |||
| 12:34:10 h | Okamoto, Naoki | *Nara Pref. | Overall: 1777 | M: 1548 | Cat M35: 209 |
| 03.05.2009 | Mukogawa Yurikamome Ultra Marathon (JPN) | 70km | |||
| 7:55:14 h | Okamoto, Naoki | Overall: 165 | M: 145 | Cat M35: 30 | |
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 | 2026 | 2025 | 2024 | 2023 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100km | 8:13:36 |
8:48:41
(488/151) |
9:51:41
(1347/467) |
10:56:12
(2596/895) |
8:44:57
(448/136) |
9:45:07
(1353/511) |
10:46:42
(2711/1129) |
8:13:36
(228/69) |
8:13:49
(268/84) |
|
8:58:20
(640/158) |
8:54:47
(590/147) |
10:32:57
(2250/586) |
11:32:44
(3539/1000) |
12:58:39
(5580/1922) |
12:34:10
(5501/2030) |
| 6h | 60.930 |
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|
60.930
(1063/49) |
|
|
|
|
|
| 12h | 116.561 |
|
|
|
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|
|
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116.561
(226/33) |
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| 24h | 233.799 |
|
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164.647
(953/60) |
232.202
(63/10) |
233.799
(63/5) |
202.098
(235/26) |
192.466
(354/30) |
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Comparison table
Comparison of performances in races with multiple participations
| 2026 | 2025 | 2024 | 2023 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Saroma 100 Km Ultramarathon | 14 | 8:48:41 | 9:51:41 | 10:56:12 | 8:44:57 | 9:45:07 | 10:46:42 | 8:13:36 | 8:13:49 | 8:58:20 | 8:54:47 | 10:32:57 | 11:32:44 | 12:58:39 | 12:34:10 | |
| Jingu Gaien 24 Hour Challenge | 5 | 164.647 | 232.202 | 233.799 | 202.098 | 192.466 | ||||||||||
| Karisakatoge beyond Chichibu Run | 2 | 16:22:59 | 19:47:37 | |||||||||||||
| Hasetsune Cup - Japan Mountain Endurance Race | 2 | 11:10:34 | 10:29:15 |