Masahiro (里見政洋) Satomi
Born : 1973 Cat. M50 Ultrarunner since 2013 JPN
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
36
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?JPNJapan
28,1%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 3 020; Σ finishers = 10 754. 3 020 / 10 754 × 100 = 28.08%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races1 839 km
Longest race100,0 km

Km per year (ultra races)

2022
50
1 race
2023
2024
54
1 race
2025
103
2 races
2026

Race types (share of distance)

Road96,2%
Trail3,8%

HISTORY

25 race(s)
DateRacePerf.Rk
2026
30.05 48km JPN6th Lake Suwa Ultra Marathon - 48 km 6:34:15 h32
11.01 55km JPN9th Yakushima Ultramarathon 55 km 7:50:40 h27
2025
01.06 53.7km JPN23rd Rishiri Island Ultra Marathon 6:14:20 h125
2023
11.06 50km JPN17th Iwate Ginga 50km Marathon Challenge 5:29:02 h44
2019
13.10 60km JPN2nd Miki Disaster Prevention Ultra Marathon 6:02:55 h10
25.05 52km JPN8th Tojinbo 52 km Ultramarathon 6:07:52 h12
02.05 70km JPN27. Mukogawa Yurikamome Ultra Marathon 7:49:23 h245
2018
20.10 100km JPN3rd Iki 100 km Ultra Marathon 12:17:14 h141
23.09 50km JPN28. Akita Nairiku 50km Marathon 4:56:22 h29
03.06 100km JPN1st Nanto 100 km Ultramarathon 13:35:25 h101
13.05 50km JPN22th 50 km Ultramarathon Ako Seaside Park 4:55:48 h20
2017
24.09 88km JPN20th Muraoka 88 km Ultra Marathon 10:51:51 h41
02.07 100km JPN1st Nikko 100km Ultramarathon 12:42:40 h507
23.04 100km JPN9th 100 km Ultra Maranic Osaka 11:33:45 h93
15.01 100km JPN27th Miyako 100 km Ultramarathon 11:07:18 h83
2016
09.10 100km JPN11th Echigo Kubikino 100km Ultramarathon 11:10:01 h318
18.09 60km JPN16th Tango 60 km Ultramarathon 6:36:06 h183
24.04 100km JPN18. Okukumano 100 km Ultramarathon 10:36:34 h48
2015
13.09 50km JPN3rd 50 km Ultramarathon Hakusan-Shirakawago 5:11:52 h75
26.07 100km JPN5th North Okhotsk 100 km Marathon 10:56:30 h78
07.06 72km JPN4th Hida Takayama 72 km Ultramarathon 7:37:21 h68
2014
27.07 77km JPN21. Ultramarathon Okumusashi 9:56:19 h456
07.06 100km JPN24th Aso Caldera Super Marathon 100 km 11:29:29 h261
2013
14.09 6h JPN6th 6-hour relay & solo marathon Miki 52.800 km6
16.06 50km JPN8. Okinoshima 50km Ultra Marathon 5:38:02 h42