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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Osaku, Kenjiro 大作健次郎   Submit Personal Website Send Link 
Club: やまぶきいろ 
Residence: Tokyo
Year of birth: 1980 (Cat. german: M45)
Date of birth: 00.00.0000 (Cat. internat.: M45)
Nationality: JPN JPN Japan
RunnerID: 369252
 

31 search results (31 Events, 3139.904 km).  (More)

2025 3 Events, 365 km  (More)
25.-26.10.2025 Jungle Guruguru Max - 160 km (JPN) 160km
28:37:37 h Osaku, Kenjiro 大作税理士事務所  Overall: 1 M: 1 Cat M40: 1
10.05.2025 Aso Volcano Trail (JPN) 105km
15:51:31 h Osaku, Kenjiro *Tokyo  Overall: 26 M: 23 Cat M40: 7
13.04.2025 Atsumi Peninsula Ultra Nature Run - 100km (JPN) 100km
10:49:18 h Osaku, Kenjiro 大作税理士事務所  Overall: 10 M: 9 Cat M40: 2
2023 2 Events, 205 km  (More)
13.05.2023 Aso Volcano Trail (JPN) 105km
19:12:18 h Osaku, Kenjiro *Tokyo  Overall: 16 M: 16 Cat M40: 5
15.04.2023 Atsumi Peninsula Ultra Nature Run - 100km (JPN) 100km
8:53:25 h Osaku, Kenjiro 大作税理士事務所  Overall: 8 M: 7 Cat M40: 1
2019 2 Events, 225.934 km  (More)
14.-16.09.2019 Shinetsu Five Mountains Trail 100 mile (JPN) 100mi
20:46:28 h Osaku, Kenjiro *Tokyo Pref.  Overall: 5 M: 5 Cat M35: 2
19.05.2019 Osorakan-Trail (JPN) 65km
9:15:39 h Osaku, Kenjiro   Overall: 19 M: 19 Cat M35: 4
2018 2 Events, 330.934 km  (More)
15.-17.09.2018 Shinetsu Five Mountains Trail 100 mile (JPN) 100mi
21:21:55 h Osaku, Kenjiro 大作税理士事務所  Overall: 10 M: 10 Cat M35: 3
27.-29.04.2018 Ultra-Trail Mt. Fuji (UTMF) (JPN) 170km
24:17:59 h Osaku, Kenjiro 大作税理士  Overall: 17 M: 16 Cat M35: 6
2017 2 Events, 170 km  (More)
17.12.2017 Coast to Coast 70k Trail Run (JPN) 68km
6:43:49 h Osaku, Kenjiro   Overall: 7 M: 7 Cat M35: 1
16.-18.09.2017 Shinetsu Five Mountains Trail 100 mile (JPN) 102km
12:17:45 h Osaku, Kenjiro 大作税理士  Overall: 8 M: 8 Cat M35: 4
2016 1 Event, 70 km  (More)
24.04.2016 Okumikawa Power Trail (JPN) 70km
8:41:00 h Osaku, Kenjiro 大作税理士事務所  Overall: 15 M: 15 Cat M35: 6
2015 2 Events, 233.3 km  (More)
25.-27.09.2015 Ultra-Trail Mt. Fuji (UTMF) (JPN) 170.3km
24:52:27 h Osaku, Kenjiro   Overall: 13 M: 13 Cat M23: 6
12.04.2015 Okumikawa Power Trail (JPN) 63km
9:00:08 h Osaku, Kenjiro *Tokyo  Overall: 20 M: 20 Cat M23: 11
2014 3 Events, 310.934 km  (More)
28.-29.06.2014 Fukushima-Nasu Long Trail (JPN) 100km
15:22:58 h Osaku, Kenjiro   Overall: 9 M: 9 Cat M23: 4
31.05.2014 OSJ Okukuji Trail 50k (JPN) 50km
8:40:58 h Osaku, Kenjiro *Tokyo  Overall: 9 M: 9 Cat M23: 7
25.-27.04.2014 Ultra-Trail Mt. Fuji (UTMF) (JPN) 100mi
25:26:31 h Osaku, Kenjiro *Tokyo  Overall: 23 M: 21 Cat M23: 9
2013 3 Events, 371.868 km  (More)
07.-08.09.2013 OSJ Yatsugatake Super Trail 100 miles race (JPN) 100mi
20:48:46 h Osaku, Kenjiro *Tokyo  Overall: 2 M: 2 Cat M23: 1
02.06.2013 OSJ Okukuji Trail 50k (JPN) 50km
8:25:12 h Osaku, Kenjiro *Tokyo  Overall: 11 M: 11 Cat M23: 5
26.-28.04.2013 Ultra-Trail Mount Fuji (UTMF) (JPN) 100mi
23:14:54 h Osaku, Kenjiro *Tokyo  Overall: 17 M: 17 Cat M23: 7
2012 3 Events, 260.934 km  (More)
03.-04.11.2012 OSJ Yatsugatake Super Trail 100 miles race (JPN) 100mi
20:10:41 h Osaku, Kenjiro *Tokyo  Overall: 4 M: 4 Cat M23: 3
16.09.2012 Hakuba Int. Trail Run (JPN) 50km
5:01:41 h Osaku, Kenjiro *Tokyo  Overall: 3 M: 3 Cat M23: 1
03.06.2012 OSJ Okukuji Trail 50k (JPN) 50km
7:37:09 h Osaku, Kenjiro *Tokyo  Overall: 7 M: 7 Cat M23: 5
2011 1 Event, 50 km  (More)
05.06.2011 OSJ Okukuji Trail 50k (JPN) 50km
7:25:18 h Osaku, Kenjiro *Chiba Pref.  Overall: 16 M: 16 Cat M23: 8
2010 2 Events, 160 km  (More)
19.-20.09.2010 Shinetsu Five Mountains Trail 110km (JPN) 110km
13:00:11 h Osaku, Kenjiro   Overall: 7 M: 7 Cat M23: 3
11.04.2010 OSJ Okukuji Trail 50k (JPN) 50km
9:02:24 h Osaku, Kenjiro *Chiba Pref.  Overall: 18 M: 18 Cat M23: 12
2009 1 Event, 100 km  (More)
21.-22.09.2009 Shinetsu Five Mountains Trail 100km (JPN) 100km
12:47:48 h Osaku, Kenjiro   Overall: 16 M: 16 Cat M23: 6
2008 1 Event, 71.5 km  (More)
12.-13.10.2008 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
10:20:48 h Osaku, Kenjiro やまぶきいろ  Overall: 77 M: 71 Cat M23: 38
2007 1 Event, 71.5 km  (More)
14.-15.10.2007 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
11:38:23 h Osaku, Kenjiro 大綿上  Overall: 136 M: 131 Cat M23: 64
2006 1 Event, 71.5 km  (More)
08.-09.10.2006 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
13:15:53 h Osaku, Kenjiro 大綿上  Overall: 221 M: 204 Cat M23: 64
2005 1 Event, 71.5 km  (More)
09.-10.10.2005 Hasetsune Cup - Japan Mountain Endurance Race (JPN) 71.5km
17:25:56 h Osaku, Kenjiro   Overall: 436 M: 402 Cat M23: 107

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 2023 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005

Comparison table

Comparison of performances in races with multiple participations

   2025 2023 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005
OSJ Okukuji Trail 50k 5               8:40:58 8:25:12 7:37:09 7:25:18 9:02:24          
Hasetsune Cup - Japan Mountain Endurance Race 4                           10:20:48 11:38:23 13:15:53 17:25:56
Ultra-Trail Mount Fuji (UTMF) 4       24:17:59     24:52:27 25:26:31 23:14:54                
Shinetsu Five Mountains Trail 100 mile 3     20:46:28 21:21:55 12:17:45                        
Aso Volcano Trail 2 15:51:31 19:12:18                              
Atsumi Peninsula Ultra Nature Run - 100km 2 10:49:18 8:53:25                              
Okumikawa Power Trail 2           8:41:00 9:00:08                    
OSJ Yatsugatake Super Trail 100 miles race 2                 20:48:46 20:10:41              
Shinetsu Five Mountains Trail 100km 2                       13:00:11 12:47:48