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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Shiroki, Seiji 白木星次   Submit Personal Website Send Link 
Club: まるお製作所 
Residence: Kanagawa Pref.
Year of birth: 1992 (Cat. german: M30)
Date of birth: 00.00.0000 (Cat. internat.: M23)
Nationality: JPN JPN Japan
RunnerID: 1083785
 

16 search results (16 Events, 968.5 km).  (More)

2025 1 Event, 70 km  (More)
08.06.2025 Iwate Ginga 70km Marathon Challenge (JPN) 70km
5:49:48 h Shiroki, Seiji *Kanagawa Pref.  Overall: 3 M: 3 Cat M23: 1
2024 1 Event, 65 km  (More)
14.-15.07.2024 Nozawa Onsen 4100D Mountain Trail Pair (JPN) 65km
10:05:20 h Shiroki, Seiji *Kanagawa Pref.  Overall: 5 M: 5 Cat M23: 3
2023 5 Events, 284 km  (More)
21.10.2023 Seoul Ultra Trail 50K (KOR) 52km
8:50:11 h Shiroki, Seiji   Overall: 48 M: 42 Cat M23: 9
17.09.2023 Tango 60 km Ultramarathon (JPN) 60km
5:01:30 h Shiroki, Seiji   Overall: 8 M: 8 Cat M23: 4
11.06.2023 Iwate Ginga 50km Marathon Challenge (JPN) 50km
3:33:19 h Shiroki, Seiji *Kanagawa Pref.  Overall: 3 M: 3 Cat M23: 1
16.04.2023 Fuji 3 Lakes 62 km Challenge (JPN) 62km
6:05:59 h Shiroki, Seiji 軽トラ  Overall: 44 M: 40 Cat M23: 5
15.01.2023 Tokyo Edogawa Ultra Marathon - 60 km (JPN) 60km
4:18:06 h Shiroki, Seiji   Overall: 2 M: 2 Cat M23: 1
2022 5 Events, 315.8 km  (More)
09.10.2022 Echigo Kubikino 60km Ultramarathon (JPN) 60km
4:18:47 h Shiroki, Seiji *Kanagawa Pref.  Overall: 3 M: 3 Cat M23: 1
28.08.2022 Tsukuba Renjyo 70 Km Road & Trail Run (JPN) 75km
8:27:51 h Shiroki, Seiji   Overall: 5 M: 5 Cat M23: 1
03.07.2022 8-Hour Endurance Race Tokorozawa (JPN) 8h
58.800 km Shiroki, Seiji まるお製作所  Overall: 103 M: 73 Cat M23: 3
17.04.2022 Fuji 5 Lakes 62 km Challenge (JPN) 62km
4:41:44 h Shiroki, Seiji   Overall: 1 M: 1 Cat M23: 1
03.04.2022 Tokyo Edogawa Ultra Marathon - 60 km (JPN) 60km
4:07:26 h Shiroki, Seiji   Overall: 1 M: 1 Cat M23: 1
2019 3 Events, 162.7 km  (More)
14.09.2019 Shonan Int. Relay Marathon 4 hour Run (JPN) 4h
46.700 km Shiroki, Seiji   Overall: 4 M: 4 Cat M23: 1
29.06.2019 Utsukushigahara 45 Km Trail Run (JPN) 45km
4:40:05 h Shiroki, Seiji   Overall: 18 M: 17 Cat M23: 5
21.04.2019 Fuji 5 Lakes 71 km Challenge (JPN) 71km
6:07:52 h Shiroki, Seiji   Overall: 13 M: 12 Cat M23: 1
2018 1 Event, 71 km  (More)
22.04.2018 Fuji 5 Lakes 71 km Challenge (JPN) 71km
7:05:28 h Shiroki, Seiji   Overall: 43 M: 37 Cat M23: 9

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 2019 2018

Comparison table

Comparison of performances in races with multiple participations

   2025 2024 2023 2022 2019 2018
Fuji 5 Lakes 71 km Challenge 4     6:05:59 4:41:44 6:07:52 7:05:28
Tokyo Edogawa Ultra Marathon - 60 km 2     4:18:06 4:07:26