Hirotaka (稲岡宏隆) Inaoka
ID 703473
Born : 1972 Cat. M50 Ultrarunner since 2014 JPN
30
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
47
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
28,3%
Rank quotient ?This runner's calculation uses 30 eligible race(s): Σ(rank − 1) = 4 628; Σ finishers = 16 329. 4 628 / 16 329 × 100 = 28.34%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed30
Km — ultra races2 677 km
> 100 km9
> 160 km3
Longest race169,0 km
5th Lake Biwa 100 — 10/10/2025

Km per year (ultra races)

136
2 races
2022
57
1 race
2023
334
3 races
2024
264
3 races
2025
100
1 race
2026

Race types (share of distance)

Road35,9%
Trail64,1%

Records

50 km8h05'34100 km9h46'33100 mi28h23'04

HISTORY

30 race(s)
DateRacePerf.Rk
2026
28.03 100km JPN34th Mt. Rocco Cannonball Run - 100 km Power 18:12:00 h23
2025
10.10 169km JPN5th Lake Biwa 100 2d 01:41:07 h211
06.07 45km JPN1st Himebotaru Torokawadaira trail run 6:45:53 h23
23.03 50km JPN32th Mt. Rocco Cannonball Run - 50 km Speed 9:44:03 h107
2024
06.07 55km JPN2nd Shiga Kogen 55 8:13:48 h85
26.04 167km JPN9th Ultra-Trail Mt. Fuji 41:05:51 h837
30.03 112km JPN30th Mt. Rocco Cannonball Run - 112 km Power 17:15:00 h18
2023
04.06 57km JPN5th Nagi Peaks Tough Trail Challenge 11:10:18 h28
2022
16.10 57.8km JPN4th Kohechi Trail Journey 9:40:47 h14
18.06 78km JPN7th OSJ Yamanaka Onsen Trail Run 16:32:27 h100
2019
20.10 100km JPN25th River Shimanto 100km 9:55:13 h108
14.09 100mi JPN11th Shinetsu Five Mountains Trail 100 mile 28:23:04 h98
13.07 100km JPN12th OSJ Ontake 100km Ultra Trail 12:05:18 h50
23.03 112km JPN20th Mt. Rocco Cannonball Run - 112 km Power 19:24:00 h85
2018
30.06 45km JPN8th Utsukushigahara 45 km Trail Run 5:56:13 h33
12.05 108.7km JPN2nd Aso Round Trail 25:35:58 h227
24.03 112km JPN18th Mt. Rocco Cannonball Run - 112 km Power 19:08:05 h78
2017
10.12 71.7km JPN4th Izu Trail Journey 10:29:44 h233
17.09 52km JPN9th Shinetsu Five Mountains Trail 110km 6:20:04 h99
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 9:46:33 h318
28.05 65km JPN2nd Osorakan-Trail 11:59:41 h124
13.05 50km JPN3rd Mt. Hiei Int. 50 km Trail Run 8:05:34 h105
25.03 112km JPN16th Mt. Rocco Cannonball Run - 112 km Power 18:06:32 h77
2016
16.10 100km JPN22nd River Shimanto 100km 10:38:12 h231
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 11:40:14 h345
26.03 112km JPN14th Mt. Rocco Cannonball Run - 112 km Power 17:58:00 h61
2015
18.10 73km JPN6th OSJ Hyonosen Mountains Trail Race 12:27:57 h234
18.07 100km JPN8th OSJ Ontake 100km Ultra Trail 16:48:43 h538
29.03 56km JPN12th Mt. Rocco Cannonball Run - 56 km Speed 7:57:00 h102
2014
25.10 56km JPN11th Mt. Rocco Cannonball Run - 56 km Speed 8:01:00 h66