Hideaki (大曽根英明) Oosone
ID 174477
Born : 1976 Cat. M50 Ultrarunner since 2005 JPN
53
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
75
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
62,4%
Rank quotient ?This runner's calculation uses 55 eligible race(s): Σ(rank − 1) = 9 468; Σ finishers = 15 165. 9 468 / 15 165 × 100 = 62.43%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed59
Km — ultra races7 967 km
> 100 km32
> 160 km10
> 200 km9
Longest race516,0 km
20th River Road Foot Race 514 km — 30/4/2025

Km per year (ultra races)

497
3 races
2022
980
6 races
2023
1 195
5 races
2024
1 612
8 races
2025
1 136
8 races
2026

Race types (share of distance)

Road87,4%
Trail5,7%
Stage6,9%

Records

50 km13h06'29100 km11h42'00100 mi25h17'16

HISTORY

55 race(s) · 8 stage(s) nested
DateRacePerf.Rk
2026
19.07 207km JPN4th Round of the Boso Peninsula 210K 40:45:00 h9
06.06 159km JPN7th Nikko Sennin Concentric Highway Journey Run 26:01:12 h37
17.05 100km JPN32th Yatsugatake Nobeyama 100 km 13:19:06 h682
09.05 55km JPN6th Kimitsu Ultra Marathon 6:10:16 h103
11.04 8h JPN21st Toda Saiko 8 Hours 60.000 km88
20.03 205km JPN2nd Izuichi Great Race 205km 36:56:30 h8
14.03 200km JPN16th Little Edo Oedo 200k 33:19:40 h132
28.02–01.03 150km/2stages JPN3rd Modern Japanese Silk Road Journey Run 21:58:25 h44
2025
15.11 142km JPN7th Autumn leaves in Okumusashi / Chichibu Journey run 22:23:12 h53
08.11 128km JPN6th Tokyo Great Race 18:51:37 h5
01–02.11 130km/2stages JPN3rd Mito Kaido Journey run 17:24:00 h16
04.10 151km JPN2nd Noto Country Journey Run 23:58:32 h52
13.09 250km JPN8th Utsukushima Fukushima Journey Run 250K 2d 00:08:59 h43
07.06 159km JPN6th Nikko Sennin Concentric Highway Journey Run 25:50:48 h16
30.04 516km JPN20th River Road Foot Race 514 km 5d 06:16:27 h46
15–16.03 136km/2stages JPN13th Arakawa Riverside Journey Stage Race 18:54:03 h26
2024
16.11 130km JPN2nd Mito Kaido Journey run 21:15:36 h47
02.11 142km JPN6th Autumn leaves in Okumusashi / Chichibu Journey run 24:18:00 h99
14.09 250km JPN7th Utsukushima Fukushima Journey Run 250K 2d 01:19:29 h46
08.06 159km JPN5th Nikko Sennin Concentric Highway Journey Run 25:17:16 h19
30.04 514km JPN19th River Road Foot Race 514 km 5d 07:20:55 h54
2023
18.11 130km JPN1st Mito Kaido Journey run 22:56:46 h93
03.11 250km JPN4th Tokyo Great Race 250km EA 47:01:07 h10
16.09 251km JPN6th Utsukushima Fukushima Journey Run 251K 2d 01:03:03 h37
02.07 8h JPN29th 8-Hour Endurance Race Tokorozawa - 3 tai 53.900 km33
17.06 159km JPN4th Nikko Sennin Concentric Highway Journey Run 29:20:42 h28
18–19.03 136km/2stages JPN11th Arakawa Riverside Journey Stage Race 19:28:25 h36
2022
29.10 146km JPN4th Autumn leaves in Okumusashi / Chichibu Journey run 22:42:09 h65
03.05 251km JPN17th River Road Foot Race 254 km 2d 06:07:15 h39
13.03 100km JPN4th Ibaraki 100k Ultra Marathon 12:45:13 h195
2021
30.10 146km JPN3rd Autumn leaves in Okumusashi / Chichibu Journey run 25:15:08 h225
09.10 155km JPN1st Tone River Run Up Journey Run Downstream 25:55:00 h39
14.03 100km JPN3rd Ibaraki 100k Ultra Marathon 13:23:16 h136
2019
02.11 145km JPN1st Autumn leaves in Okumusashi / Chichibu Journey run 24:02:16 h117
14.09 129km JPN2nd Utsukushima Fukushima Journey Run 129K 20:36:30 h21
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 13:33:53 h1126
2018
20.10 100km JPN9th Inagawa 100km Ultra-Marathon 13:31:40 h58
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 13:38:06 h1044
2014
20.09 100km JPN17th Jonaizaka 100 km Ultra Marathon 13:56:00 h72
06.04 100km JPN65. Tsurunuma 100 km 11:42:00 h41
2013
15.09 142km JPN16th Karisakatoge beyond Chichibu Run 23:13:15 h105
07.04 100km JPN63. Tsurunuma 100 km 12:23:38 h32
2012
03.06 50km JPN4th OSJ Okukuji Trail 50k 13:06:29 h279
01.04 52km JPN61. Tsurunuma 52 km 6:15:44 h34
2011
16.07 100km JPN60. Tsurunuma 100 km 16:17:03 h45
2010
25.04 112km JPN20th Fuji 5 Lakes 112 km Challenge 14:18:54 h287
2009
26.04 112km JPN19th Fuji 5 Lakes 112 km Challenge 14:22:20 h214
2008
18.05 100km JPN14th Yatsugatake Nobeyama 100 km 12:52:11 h364
2007
20.05 100km JPN13th Yatsugatake Nobeyama 100 km 12:06:10 h232
2006
15.10 100km JPN12th River Shimanto 100km 12:26:23 h506
02.07 8h JPN12th 8-Hour Endurance Race Tokorozawa 59.400 km100
2005
18.09 100km JPN5th Tango 100 km Ultramarathon 13:47:12 h285
07.08 75km JPN12. Ultramarathon Okumusashi 9:59:30 h411
26.06 100km JPNOpen Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) 12:47:33 h1534
04.05 70km JPN17. Yamaguchi 100 Hagi-O-Kan Maranic 70 km 10:13:32 h55