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Marathon Deutsche Weinstraße 2026   HaWei50 50km Ultralauf 28.2.2026   3h, 6h, 12h, 24h of Santander  
Name: Iwahara, Masatomo 岩原正知   Submit Personal Website Send Link 
Club:  
Residence: Tokyo
Year of birth: 1980 (Cat. german: M45)
Date of birth: 29.12.1980 (Cat. internat.: M45)
Nationality: JPN JPN Japan
RunnerID: 365352
 

20 search results (20 Events, 1773.85 km).  (More)

2025 3 Events, 241 km  (More)
19.10.2025 Ultramarathon Okumusashi (JPN) 70km
5:42:01 h Iwahara, Masatomo *Tokyo  Overall: 4 M: 4 Cat M40: 2
18.05.2025 Yatsugatake Nobeyama 100 km (JPN) 100km
9:29:45 h Iwahara, Masatomo   Overall: 19 M: 18 Cat M40: 3
12.04.2025 Toda Saiko 70 km (JPN) 71km
5:02:49 h Iwahara, Masatomo *Tokyo  Overall: 2 M: 2 Cat M40: 1
2024 1 Event, 62 km  (More)
21.04.2024 Fuji 3 Lakes 62 km Challenge (JPN) 62km
4:47:00 h Iwahara, Masatomo *Tokyo  Overall: 8 M: 8 Cat M40: 2
2023 3 Events, 215 km  (More)
27.08.2023 Ainan Maranic - Food Sea and Sun (JPN) 53km
4:35:35 h Iwahara, Masatomo   Overall: 1 M: 1 Cat M40: 1
21.05.2023 Tokyo Shibamata 100 km (JPN) 100km
9:23:53 h Iwahara, Masatomo   Overall: 55 M: 51 Cat M40: 12
16.04.2023 Fuji 3 Lakes 62 km Challenge (JPN) 62km
4:50:03 h Iwahara, Masatomo *Tokyo  Overall: 6 M: 6 Cat M40: 2
2022 2 Events, 200 km  (More)
22.05.2022 Tokyo Shibamata 100 km (JPN) 100km
9:26:42 h Iwahara, Masatomo   Overall: 55 M: 47 Cat M40: 11
13.03.2022 Ibaraki 100k Ultra Marathon (JPN) 100km
8:06:48 h Iwahara, Masatomo   Overall: 9 M: 9 Cat M40: 3
2021 2 Events, 270 km  (More)
09.10.2021 Tokyo Shibamata 100 km (JPN) 100km
8:31:42 h Iwahara, Masatomo   Overall: 12 M: 9 Cat M40: 1
17.-18.07.2021 Japan Trophy 24h (JPN) 24h
170.000 km Iwahara, Masatomo   Overall: 31 M: 23 Cat M40: 7
2018 1 Event, 100 km  (More)
03.06.2018 Tokyo Shibamata 100 km (JPN) 100km
10:36:55 h Iwahara, Masatomo   Overall: 169 M: 152 Cat M35: 21
2016 1 Event, 100 km  (More)
05.06.2016 Tokyo Shibamata 100 km (JPN) 100km
10:22:50 h Iwahara, Masatomo   Overall: 162 M: 154 Cat M35: 31
2015 2 Events, 162.4 km  (More)
12.09.2015 Green Charity Marathon Tokyo - Standard Run 6H (JPN) 6h
62.400 km Iwahara, Masatomo   Overall: 5 M: 5 Cat M23: 2
19.04.2015 Fuji 5 Lakes 100 km Challenge (JPN) 100km
9:25:18 h Iwahara, Masatomo   Overall: 50 M: 48 Cat M23: 15
2014 3 Events, 223.45 km  (More)
21.-22.06.2014 Tokyo Challenge 12 hours (JPN) 12h
51.450 km Iwahara, Masatomo   Overall: 34 M: 25 Cat M23: 7
01.06.2014 Tokyo Shibamata 100 km (JPN) 100km
8:58:06 h Iwahara, Masatomo   Overall: 9 M: 9 Cat M23: 3
20.04.2014 Fuji 5 Lakes 72 km Challenge (JPN) 72km
5:50:30 h Iwahara, Masatomo *Tokyo  Overall: 7 M: 7 Cat M23: 5
2013 1 Event, 100 km  (More)
01.06.2013 Tokyo Shibamata 100 km (JPN) 100km
8:38:30 h Iwahara, Masatomo *Tokyo  Overall: 11 M: 8 Cat M23: 3
2012 1 Event, 100 km  (More)
21.10.2012 River Shimanto 100km (JPN) 100km
8:58:07 h Iwahara, Masatomo *Tokyo  Overall: 39 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 2021 2018 2016 2015 2014 2013 2012
100km 8:31:42  
 
9:23:53
(795/281) 		9:26:42
(716/90) 		8:31:42
(229/9) 		10:36:55
(2474/1007) 		10:22:50
(2165/986) 		 
8:58:06
(635/155) 		8:38:30
(418/95) 		8:58:07
(660/161)

Comparison table

Comparison of performances in races with multiple participations

   2025 2024 2023 2022 2021 2018 2016 2015 2014 2013 2012
Tokyo Shibamata 100 km 7     9:23:53 9:26:42 8:31:42 10:36:55 10:22:50   8:58:06 8:38:30  
Fuji 5 Lakes 72 km Challenge 3   4:47:00 4:50:03           5:50:30