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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Ihara, Tomokazu 井原知一   Submit Personal Website Send Link 
Club: トモ2010 
Residence: Tokyo Pref.
Year of birth: 1977 (Cat. german: M45)
Date of birth: 01.07.1977 (Cat. internat.: M45)
Nationality: JPN JPN Japan
Homepage: https://www.facebook.com/tomokazu.ihara
RunnerID: 161561
 

87 search results (85 Events, 11320.266 km).  (More)

2026 1 Event, 160.934 km  (More)
17.-18.01.2026 HURT 100 Endurance Run 100 Mile (USA) 100mi
26:09:26 h Ihara, Tomokazu   Overall: 11 M: 11 Cat M45: 1
2025 5 Events, 695.087 km  (More)
06.12.2025 Chiangmai Thailand by UTMB - HMONG 50-DAY (THA) 48km
6:14:18 h Ihara, Tomokazu Answer4  Overall: 69 M: 59 Cat M45: 5
10.-12.10.2025 Lake Biwa 100 (JPN) 169km
28:05:08 h Ihara, Tomokazu   Overall: 6 M: 6 Cat M45: 1
25.-27.08.2025 Sur les Traces des Ducs de Savoie (TDS) (ITA) 153km
31:26:51 h Ihara, Tomokazu Answer4  Overall: 271 M: 251 Cat M45: 23
18.-20.07.2025 Ouray 100 Mile Endurance Run (USA) 102mi
32:40:54 h Ihara, Tomokazu *Takao  Overall: 5 M: 5 Cat M45: 2
17.-18.05.2025 Massanutten Mountain Trails 100 Mile (USA) 100mi
23:16:43 h Ihara, Tomokazu *Tokyo  Overall: 7 M: 7 Cat M45: 1
2024 7 Events, 968.802 km  (More)
06.-08.12.2024 Chiangmai Thailand by UTMB - TRANS-INT 160 (THA) 175km
28:45:30 h Ihara, Tomokazu Answer4  Overall: 23 M: 19 Cat M45: 4
16.-17.11.2024 FunTrails100M Round (JPN) 100mi
24:42:22 h Ihara, Tomokazu *Tokyo  Overall: 1 M: 1 Cat M45: 1
14.-15.09.2024 Plain 100 Mile Endurance Run (USA) 100mi
25:54:00 h Ihara, Tomokazu *Takao, JPN  Overall: 2 M: 2 Cat M45: 1
21.-23.06.2024 Deep Japan Ultra 100 - 165 km (JPN) 165km
28:56:29 h Ihara, Tomokazu   Overall: 3 M: 3 Cat M45: 1
08.06.2024 Okushinano 100 - 50 km (JPN) 50km
6:19:04 h Ihara, Tomokazu Answer4  Overall: 26 M: 22 Cat M45: 4
18.-19.05.2024 Massanutten Mountain Trails 100 Mile (USA) 100mi
24:06:09 h Ihara, Tomokazu *Takao  Overall: 15 M: 14 Cat M45: 2
20.-21.03.2024 The Barkley Marathons 40 Mile Fun Run (USA) 40mi
22:08:53 h Ihara, Tomokazu   Overall: 11 M: 10 Cat M45: 1
20.-21.03.2024 The Barkley Marathons 60 Mile Fun Run (USA) 60mi
34:43:15 h Ihara, Tomokazu   Overall: 10 M: 9 Cat M45: 1
2023 8 Events, 1278.67 km  (More)
28.-29.10.2023 Manno Mountain Madness 2023 (JPN) 80km
13:29:16 h Ihara, Tomokazu   Overall: 7 M: 5 Cat M45: 2
08.-09.09.2023 Wasatch Front 100 Mile (USA) 100mi
23:17:17 h Ihara, Tomokazu *Takao, JPN  Overall: 6 M: 6 Cat M45: 2
20.-21.08.2023 Leadville Trail 100 Mile (USA) 100mi
23:31:18 h Ihara, Tomokazu *Hachioji  Overall: 40 M: 38 Cat M45: 6
15.07.2023 Devil's Gulch 100 Mile Race (USA) 100mi
23:54:44 h Ihara, Tomokazu *Takao  Overall: 1 M: 1 Cat M45: 1
24.-25.06.2023 Western States 100 Mile Endurance Run (USA) 100mi
20:19:59 h Ihara, Tomokazu   Overall: 39 M: 26 Cat M45: 2
03.-04.06.2023 Old Dominion 100 Mile Endurance Run (USA) 100mi
18:52:27 h Ihara, Tomokazu *Tokyo Pref.  Overall: 2 M: 2 Cat M45: 1
15.-16.03.2023 The Barkley Marathons 40 Mile Fun Run (USA) 40mi
22:46:38 h Ihara, Tomokazu   Overall: 11 M: 10 Cat M45: 1
15.-16.03.2023 The Barkley Marathons 60 Mile Fun Run (USA) 60mi
35:55:24 h Ihara, Tomokazu   Overall: 8 M: 7 Cat M45: 1
21.-24.01.2023 Hong Kong Four Trails Ultra Challenge (HKG) 298km
2d 06:02:00 h Ihara, Tomokazu   Overall: 1 M: 1 Cat M45: 1
2022 7 Events, 1003.893 km  (More)
09.-11.12.2022 Thailand by UTMB - 100mi (THA) 171km
29:19:12 h Ihara, Tomokazu   Overall: 22 M: 20 Cat M45: 2
19.-21.11.2022 Last Samurai Standing Backyard Ultra - Tokyo (JPN) 42h
281.652 km Ihara, Tomokazu   Overall: 1 M: 1 Cat M45: 1
17.-19.09.2022 Shinetsu Five Mountains Trail 100 mile (JPN) 100mi
20:56:58 h Ihara, Tomokazu Answer4  Overall: 3 M: 3 Cat M45: 1
17.-18.07.2022 Nozawa Onsen 4100D Mountain Trail (JPN) 65km
8:34:17 h Ihara, Tomokazu *Tokyo  Overall: 14 M: 13 Cat M45: 2
11.-12.06.2022 Okushinano 100 (JPN) 100km
12:04:38 h Ihara, Tomokazu Answer4  Overall: 15 M: 14 Cat M40: 5
21.-22.05.2022 Trainic World 100 Mile in Sai-No-Kuni (JPN) 100mi
26:24:41 h Ihara, Tomokazu Answer4  Overall: 2 M: 2 Cat M40: 2
08.-09.03.2022 The Barkley Marathons 40 Mile Fun Run (USA) 40mi
26:15:27 h Ihara, Tomokazu   Overall: 1 M: 1 Cat M40: 1
2021 1 Event, 75 km  (More)
28.08.2021 Okushinano 100 - 75 km (JPN) 75km
9:03:39 h Ihara, Tomokazu Answer4  Overall: 25 M: 23 Cat M40: 6
2020 1 Event, 160.934 km  (More)
18.-19.01.2020 HURT 100 Endurance Run 100 Mile (USA) 100mi
23:57:21 h Ihara, Tomokazu *Takao  Overall: 4 M: 4 Cat M40: 1
2019 7 Events, 1002.362 km  (More)
30.11.2019 Formosa Trail 75Km (TPE) 75km
11:06:59 h Ihara, Tomokazu   Overall: 5 M: 5 Cat M40: 3
14.-16.09.2019 Shinetsu Five Mountains Trail 100 mile (JPN) 100mi
20:20:18 h Ihara, Tomokazu *Tokyo Pref.  Overall: 4 M: 4 Cat M40: 2
03.08.2019 Volcanic 50 (USA) 50km
6:46:37 h Ihara, Tomokazu *Takao  Overall: 11 M: 8 Cat M40: 2
13.-14.07.2019 OSJ Ontake 100 Mile Ultra Trail (JPN) 100mi
19:13:17 h Ihara, Tomokazu   Overall: 6 M: 6 Cat M40: 1
30.03.-01.04.2019 The Barkley Marathons 60 Mile Fun Run (USA) 60mi
39:38:34 h Ihara, Tomokazu   Overall: 4 M: 4 Cat M40: 1
06.-09.02.2019 Hong Kong Four Trails Ultra Challenge (HKG) 298km
2d 09:42:00 h Ihara, Tomokazu   Overall: 2 M: 2 Cat M40: 1
19.-20.01.2019 HURT 100 Endurance Run 100 Mile (USA) 100mi
24:21:19 h Ihara, Tomokazu *Takao  Overall: 4 M: 4 Cat M40: 1
2018 3 Events, 329.934 km  (More)
01.-02.12.2018 Formosa Trail 100Km (TPE) 104km
15:29:53 h Ihara, Tomokazu   Overall: 5 M: 5 Cat M40: 2
15.-17.09.2018 Shinetsu Five Mountains Trail 100 mile (JPN) 100mi
21:02:41 h Ihara, Tomokazu Answer4  Overall: 7 M: 7 Cat M40: 4
14.-15.07.2018 Nozawa Onsen 4100D Mountain Trail (JPN) 65km
9:16:17 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 6 M: 5 Cat M40: 1
2017 5 Events, 693.736 km  (More)
23.-24.09.2017 Mountain Lakes 100 (USA) 100mi
21:14:41 h Ihara, Tomokazu *Kawasaki  Overall: 5 M: 5 Cat M40: 2
16.09.2017 The Barkley Fall Classic (USA) 50km
9:55:23 h Ihara, Tomokazu *Kawasaki  Overall: 3 M: 2 Cat M40: 1
15.-16.07.2017 OSJ Ontake 100 Mile Ultra Trail (JPN) 100mi
19:07:10 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 9 M: 9 Cat M40: 3
11.-12.03.2017 Coyote Cohorts Backbone 100 Mile Trail Ultra (USA) 100mi
21:47:13 h Ihara, Tomokazu   Overall: 1 M: 1 Cat M35: 1
14.-15.01.2017 HURT 100 Endurance Run 100 Mile (USA) 100mi
25:43:23 h Ihara, Tomokazu *Kawasaki   Overall: 6 M: 6 Cat M35: 2
2016 6 Events, 965.604 km  (More)
17.-18.09.2016 Idaho Mountain Trail Ultra Festival (IMTUF 100) (USA) 100mi
26:23:29 h Ihara, Tomokazu *Kawasaki  Overall: 13 M: 12 Cat M35: 6
27.-28.08.2016 Cascade Crest Classic 100 Mile (USA) 100mi
21:37:00 h Ihara, Tomokazu *Kawasaki  Overall: 8 M: 8 Cat M35: 4
06.-07.08.2016 Angeles Crest 100 Mile (USA) 100mi
25:43:09 h Ihara, Tomokazu *Kawasaki, Japan  Overall: 28 M: 28 Cat M35: 9
19.-20.03.2016 Fort Clinch 100 Mile Endurance Run (USA) 100mi
19:23:20 h Ihara, Tomokazu *Kawasaki  Overall: 2 M: 2 Cat M35: 1
19.-20.02.2016 Orcas Island 100 Mile Race (USA) 100mi
22:42:40 h Ihara, Tomokazu *Kawasaki  Overall: 3 M: 3 Cat M35: 2
16.-17.01.2016 HURT 100 Endurance Run 100 Mile (USA) 100mi
25:44:33 h Ihara, Tomokazu *Kawasaki  Overall: 8 M: 8 Cat M35: 3
2015 3 Events, 492.168 km  (More)
25.-27.09.2015 Ultra-Trail Mt. Fuji (UTMF) (JPN) 170.3km
25:24:59 h Ihara, Tomokazu   Overall: 15 M: 15 Cat M35: 7
18.-19.07.2015 OSJ Ontake 100 Mile Ultra Trail (JPN) 100mi
17:55:38 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 4 M: 4 Cat M35: 2
17.-18.01.2015 HURT 100 Endurance Run 100 Mile (USA) 100mi
23:21:07 h Ihara, Tomokazu *Kawasaki  Overall: 4 M: 4 Cat M35: 2
2014 4 Events, 592.802 km  (More)
14.-15.09.2014 Shinetsu Five Mountains Trail 110km (JPN) 110km
11:41:11 h Ihara, Tomokazu   Overall: 9 M: 9 Cat M35: 2
02.-03.08.2014 Angeles Crest 100 Mile (USA) 100mi
31:19:27 h Ihara, Tomokazu *Kawasaki Kanagawa  Overall: 74 M: 63 Cat M35: 12
21.-22.03.2014 Antelope Island Buffalo Run 100 Mile (USA) 100mi
17:17:12 h Ihara, Tomokazu *Kawasaki  Overall: 2 M: 2 Cat M35: 1
18.-19.01.2014 HURT 100 Endurance Run 100 Mile (USA) 100mi
26:02:00 h Ihara, Tomokazu   Overall: 7 M: 7 Cat M35: 4
2013 6 Events, 921.736 km  (More)
30.11.-01.12.2013 HK168 - 168 Km ultra-endurance race Hong Kong (HKG) 168km
27:25:30 h Ihara, Tomokazu   Overall: 3 M: 3 Cat M35: 1
02.-03.11.2013 Pinhoti 100 Mile (USA) 100mi
20:30:03 h Ihara, Tomokazu *Kawasaki  Overall: 9 M: 9 Cat M35: 1
15.-16.09.2013 Shinetsu Five Mountains Trail 110km (JPN) 110km
12:10:23 h Ihara, Tomokazu   Overall: 10 M: 10 Cat M35: 4
03.-04.08.2013 Angeles Crest 100 Mile (USA) 100mi
22:28:35 h Ihara, Tomokazu *Kawasaki  Overall: 5 M: 4 Cat M35: 1
22.-23.03.2013 Antelope Island Buffalo Run 100 Mile (USA) 100mi
17:47:00 h Ihara, Tomokazu *Kawasaki  Overall: 4 M: 4 Cat M35: 2
19.-20.01.2013 HURT 100 Endurance Run 100 Mile (USA) 100mi
24:49:00 h Ihara, Tomokazu   Overall: 6 M: 6 Cat M35: 4
2012 4 Events, 643.736 km  (More)
17.-18.11.2012 The Chimera 100 Mile Mountain Race (USA) 100mi
20:09:21 h Ihara, Tomokazu *Kawasaki  Overall: 5 M: 5 Cat M35: 2
15.-16.07.2012 OSJ Ontake 100 Mile Ultra Trail (JPN) 100mi
17:06:31 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 2 M: 2 Cat M35: 1
19.-20.05.2012 Born to Run Ultra 100 Mile Marathon (USA) 100mi
17:50:00 h Ihara, Tomokazu *Kawasaki-Shi, Saitama Pref.  Overall: 1 M: 1 Cat M23: 1
24.-25.02.2012 Rocky Road 100 Mile Runs (USA) 100mi
16:52:59 h Ihara, Tomokazu *Kawasaki  Overall: 4 M: 4 Cat M23: 1
2011 6 Events, 603.368 km  (More)
19.-20.11.2011 The Chimera 100 Mile Mountain Race (USA) 100mi
19:30:33 h Ihara, Tomokazu *Kawasaki-Shi, Kenagawa-Ken  Overall: 3 M: 3 Cat M23: 1
06.11.2011 Kanna Mountain Run II (JPN) 50km
6:35:19 h Ihara, Tomokazu DMJ  Overall: 7 M: 7 Cat M23: 4
09.-10.10.2011 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
9:55:17 h Ihara, Tomokazu Dmj5号  Overall: 62 M: 61 Cat M23: 31
24.-25.09.2011 Shinetsu Five Mountains Trail 110km (JPN) 110km
12:22:49 h Ihara, Tomokazu   Overall: 10 M: 9 Cat M23: 5
16.-17.07.2011 OSJ Ontake 100 Mile Ultra Trail (JPN) 100mi
18:49:51 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 4 M: 4 Cat M23: 1
05.06.2011 OSJ Okukuji Trail 50k (JPN) 50km
7:36:52 h Ihara, Tomokazu   Overall: 20 M: 19 Cat M23: 10
2010 6 Events, 431.5 km  (More)
10.-11.10.2010 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
9:53:11 h Ihara, Tomokazu   Overall: 54 M: 53 Cat M23: 26
03.10.2010 Madarao Forest Trails 50km (JPN) 50km
5:13:30 h Ihara, Tomokazu Trail-Halic  Overall: 11 M: 11 Cat M23: 5
19.-20.09.2010 Shinetsu Five Mountains Trail 110km (JPN) 110km
13:00:13 h Ihara, Tomokazu   Overall: 8 M: 8 Cat M23: 4
04.07.2010 OSJ Shiga Kogen Trail 50K (JPN) 50km
7:25:19 h Ihara, Tomokazu DMJ  Overall: 21 M: 20 Cat M23: 15
16.05.2010 Yatsugatake Nobeyama 100 km (JPN) 100km
9:55:17 h Ihara, Tomokazu トモ2010  Overall: 68 M: 65 Cat M23: 18
11.04.2010 OSJ Okukuji Trail 50k (JPN) 50km
8:58:44 h Ihara, Tomokazu *Kanagawa Pref.  Overall: 17 M: 17 Cat M23: 11
2009 5 Events, 300 km  (More)
04.10.2009 Madarao Forest Trails 50km (JPN) 50km
5:41:54 h Ihara, Tomokazu *Saitama Pref.  Overall: 27 M: 27 Cat M23: 11
19.07.2009 OSJ Ontake 100km Ultra Trail (JPN) 100km
14:10:16 h Ihara, Tomokazu *Saitama Pref.  Overall: 113 M: 107 Cat M23: 38
05.07.2009 OSJ Shiga Kogen Trail 50K (JPN) 50km
9:08:30 h Ihara, Tomokazu *Saitama Pref.  Overall: 159 M: 148 Cat M23: 62
12.04.2009 OSJ Okukuji Trail 50k (JPN) 50km
12:12:38 h Ihara, Tomokazu *Saitama Pref.  Overall: 111 M: 102 Cat M23: 53
08.02.2009 OSJ Jungle Trail 50K Amami (JPN) 50km
8:01:32 h Ihara, Tomokazu *Saitama Pref.  Overall: 156 M: 131 Cat M23: 45

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 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009

Comparison table

Comparison of performances in races with multiple participations

   2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
HURT 100 Endurance Run 100 Mile 8 26:09:26           23:57:21 24:21:19   25:43:23 25:44:33 23:21:07 26:02:00 24:49:00        
OSJ Ontake 100 Mile Ultra Trail 5               19:13:17   19:07:10   17:55:38     17:06:31 18:49:51    
Shinetsu Five Mountains Trail 110km 4                         11:41:11 12:10:23   12:22:49 13:00:13  
Shinetsu Five Mountains Trail 100 mile 3         20:56:58     20:20:18 21:02:41                  
OSJ Okukuji Trail 50k 3                               7:36:52 8:58:44 12:12:38
Angeles Crest 100 Mile 3                     25:43:09   31:19:27 22:28:35        
OSJ Shiga Kogen Trail 50K 2                                 7:25:19 9:08:30
Hong Kong Four Trails Ultra Challenge 2       54:02:00       57:42:00                    
Nozawa Onsen 4100D Mountain Trail 2         8:34:17       9:16:17                  
Madarao Forest Trails 50km 2                                 5:13:30 5:41:54
Hasetsune Cup - Japan Mountain Endurance Race 2                               9:55:17 9:53:11  
Antelope Island Buffalo Run 100 Mile 2                         17:17:12 17:47:00        
The Chimera 100 Mile Mountain Race 2                             20:09:21 19:30:33    
Massanutten Mountain Trails 100 Mile 2   23:16:43 24:06:09