Masaaki (小室政昭) Komuro
ID 410249
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.
49
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
48,2%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 3 512; Σ finishers = 7 280. 3 512 / 7 280 × 100 = 48.24%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 668 km
> 100 km13
> 160 km3
> 200 km1
Longest race203,0 km
5th Little Edo Oedo 200k — 28/2/2015

Km per year (ultra races)

205
2 races
2022
203
2 races
2023
203
2 races
2024
200
1 race
2025
2026

Race types (share of distance)

Road68,4%
Ult.Walk31,6%

Records

100 km11h43'00100 mi26h38'52

HISTORY

25 race(s)
DateRacePerf.Rk
2025
03.05 200km JPN8th Ultra Walking around Lake Biwa 2d 01:53:27 h95
2024
23.11 103km JPN3rd Kyoto Ultra Walking 110km 24:00:20 h131
13.01 100km JPN1st Nara Mahoroba Ultra Walking 21:30:40 h64
2023
25.11 110km JPN2nd Kyoto Ultra Walking 110km 25:09:31 h74
25.02 93km JPN3rd Nihondaira and Suruganokuni Ultra Run 19:20:33 h14
2022
03.05 105km JPN1st Miura-Halbinsel-Tour Ultra Walking 19:09:15 h7
23.04 100km JPN4th Hakone Kodo Ultra Walking 20:12:04 h14
2021
16.10 100km JPN4th Nakasendo to Kisoji Ultra Run 20:28:01 h10
12.06 125km JPN5th Fujisan Issyu Walking 22:20:22 h18
2020
21.11 104km JPN3rd Lake Kasumigaura Ultra Run 21:29:37 h27
22.02 115km JPN10th Oedo Night run 115k 17:14:08 h50
2019
17.08 101km JPN7th World Cultural Heritage "Fuji" Foot Race 14:33:15 h58
15.06 161.6km JPN1st Nikko Sennin Concentric Journey Run 26:38:52 h35
21.04 118km JPN29th Fuji 5 Lakes 118 km Challenge 14:49:49 h463
13.04 70km JPN14th Toda Saiko 70 km 7:27:29 h202
2018
15.09 122km JPN1st Utsukushima Fukushima Journey Run 122K 17:28:57 h14
19.08 101km JPN6th World Cultural Heritage "Fuji" Foot Race 13:17:00 h37
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 13:17:43 h887
14.04 70km JPN13th Toda Saiko 70 km 7:29:53 h217
2016
02.07 8h JPN22nd 8-Hour Endurance Race Tokorozawa 51.936 km174
2015
12.07 8h JPN21st 8-Hour Endurance Race Tokorozawa 59.274 km81
28.02 203km JPN5th Little Edo Oedo 200k 31:21:03 h67
2014
20.09 100km JPN17th Jonaizaka 100 km Ultra Marathon 11:43:00 h24
2013
07.07 8h JPN19th 8-Hour Endurance Race Tokorozawa 55.182 km89
21.04 100km JPN23rd Fuji 5 Lakes 100 km Challenge 13:47:50 h685