Yoichiro (原洋一郎) Hara
ID 227611
Born : 1971 Cat. M55 Ultrarunner since 2010 JPN
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
5
Countries visited ?ESPSpainGERGermanyITAItalyJPNJapanSUISwitzerland
53,1%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 17 230; Σ finishers = 32 426. 17 230 / 32 426 × 100 = 53.14%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races3 781 km
> 100 km8
> 160 km4
Longest race170,0 km
5th Ultra-Trail Mt. Fuji (UTMF) — 27/4/2018

Km per year (ultra races)

373
4 races
2022
335
4 races
2023
552
6 races
2024
315
4 races
2025
267
2 races
2026

Race types (share of distance)

Road25,7%
Trail74,3%

Records

50 km9h14'42100 km10h12'33

HISTORY

41 race(s)
DateRacePerf.Rk
2026
24.04 167km JPN11th Ultra-Trail Mt. Fuji 42:34:01 h1062
13.04 100km JPN11th Tamagawa Ultra Marathon - 100 km 10:27:29 h12
2025
21.12 100km JPN8th Okinawa 100km Ultramarathon 11:09:18 h142
15.11 50km JPN11th FunTrails50K Round 9:14:42 h175
20.07 65km JPN16th Nozawa Onsen 4100D Mountain Trail 12:32:30 h88
07.06 100km JPN2nd Gran Trail Minakami - 100km 20:50:44 h10
2024
08.12 70km JPN11th Izu Trail Journey 11:05:39 h538
16.11 50km JPN10th FunTrails50K Round 9:17:31 h163
14.07 65km JPN15th Nozawa Onsen 4100D Mountain Trail 12:25:13 h155
26.04 167km JPN9th Ultra-Trail Mt. Fuji 44:07:38 h1206
14.04 100km JPN9th Tamagawa Ultra Marathon - 100 km 11:36:57 h27
10.03 100km JPN6th Ibaraki 100k Ultra Marathon 10:12:33 h83
2023
10.12 70km JPN10th Izu Trail Journey 11:20:11 h575
11.11 100km JPN10th Michikusa-Ultra, Minamiizu 100 km 13:00:38 h71
16.07 65km JPN14th Nozawa Onsen 4100D Mountain Trail 12:52:15 h185
16.04 100km JPN33th Fuji 4 Lakes 100 km Challenge 11:15:17 h221
2022
11.12 70km JPN9th Izu Trail Journey 10:49:16 h493
17.07 65km JPN13th Nozawa Onsen 4100D Mountain Trail 12:09:46 h200
22.04 167km JPN7th Ultra-Trail Mt. Fuji 39:49:07 h1069
09.04 71km JPN17th Toda Saiko 70 km 7:35:37 h46
2021
12.12 69.1km JPN8th Izu Trail Journey 10:28:05 h442
23.07 65km JPN12th Nozawa Onsen 4100D Mountain Trail 11:39:12 h233
2020
13.12 66km JPN7th Izu Trail Journey 10:16:33 h450
2019
08.12 71.7km JPN6th Izu Trail Journey 9:56:22 h399
13.07 65km JPN10th Nozawa Onsen 4100D Mountain Trail 11:29:51 h123
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 12:38:07 h624
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 11:48:25 h453
2018
09.12 71.7km JPN5th Izu Trail Journey 11:54:33 h597
17.11 52km JPN4th FunTrails50K Two Lakes&Green line 8:48:02 h152
27.04 170km JPN5th Ultra-Trail Mt. Fuji 43:39:34 h764
2017
25.06 72.7km JPN4. Spatrail - Shima to Kusatsu 11:48:52 h402
23.04 100km JPN27th Fuji 5 Lakes 100 km Challenge 13:18:28 h949
2016
11.09 129km JPN3rd SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 33:41:02 h339
16.07 65km JPN7th Nozawa Onsen 4100D Mountain Trail 12:19:12 h165
22.05 100km JPN22nd Yatsugatake Nobeyama 100 km 13:40:51 h1076
2015
07.03 125km ESPTransgrancanaria 125 km 29:11:23 h307
2014
19.07 101km SUI2. Eiger Ultra Trail 101 km 24:09:29 h284
2013
22.06 100km GER3. Zugspitz Ultratrail 24:44:11 h428
2012
29.06 118km ITA6^ Lavaredo Ultra Trail by UTMB - 120K 30:44:24 h351
2011
26.08 98km ITA6ème Courmayeur-Champex-Chamonix 23:59:47 h1490
2010
16.05 100km JPN16th Yatsugatake Nobeyama 100 km 13:26:10 h722