Kouichiro (萩原耕一郎) Hagiwara
ID 342432
Born : 1979 Cat. M45 Ultrarunner since 2012 JPN
45
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
2
Countries visited ?JPNJapanTPETaiwan
35,2%
Rank quotient ?This runner's calculation uses 46 eligible race(s): Σ(rank − 1) = 10 099; Σ finishers = 28 655. 10 099 / 28 655 × 100 = 35.24%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed46
Km — ultra races3 428 km
> 100 km6
Longest race130,0 km
3rd Kyoto Great Round 130 km — 29/12/2022

Km per year (ultra races)

609
7 races
2022
454
6 races
2023
122
2 races
2024
70
1 race
2025
165
2 races
2026

Race types (share of distance)

Road32,6%
Trail67,4%

Records

50 km7h15'37100 km9h53'0650 mi10h43'54

HISTORY

46 race(s)
DateRacePerf.Rk
2026
31.05 100km JPN1st Nara Ultra Marathon 13:41:36 h1473
11.04 8h JPN21st Toda Saiko 8 Hours 65.000 km57
2025
19.10 70km JPN32. Ultramarathon Okumusashi 7:45:09 h99
2024
06.10 51.4km JPN12th Trainic world Ogose-Tokigawa Trail Run 50km 8:51:45 h94
13.04 71km JPN19th Toda Saiko 70 km 7:49:48 h82
2023
03.12 51.4km JPN11th Trainic world Ogose-Tokigawa Trail Run 50km 8:34:26 h107
21.10 100km JPN6th Iki 100 km Ultra Marathon 9:53:06 h44
02.07 8h JPN29th 8-Hour Endurance Race Tokorozawa - 3 tai 53.900 km26
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 11:51:28 h941
04.06 78km JPN30. Ultramarathon Okumusashi 9:34:52 h319
08.04 71km JPN18th Toda Saiko 70 km 7:33:52 h92
2022
29.12 130km JPN3rd Kyoto Great Round 130 km 25:43:53 h22
03.07 8h JPN28th 8-Hour Endurance Race Tokorozawa 63.700 km69
11.06 100.8km JPN2nd Okushinano 100 15:46:42 h117
05.06 78km JPN29. Ultramarathon Okumusashi 9:13:44 h364
29.05 64km JPN5th Mizukami Mountain Party 13:32:42 h151
09.04 71km JPN17th Toda Saiko 70 km 8:27:49 h108
05.03 101km JPN1st Kumagawa Revival Trail 15:00:51 h7
2021
12.12 69.1km JPN8th Izu Trail Journey 9:12:59 h185
04.07 8h JPN27th 8-Hour Endurance Race Tokorozawa 63.700 km214
10.04 70km JPN16th Toda Saiko 70 km 7:13:05 h185
14.03 62km JPN4th Mizukami Mountain Party 9:59:56 h45
2020
13.12 66km JPN7th Izu Trail Journey 11:31:36 h715
2019
30.11 75km TPE4th Formosa Trail 75km 16:46:58 h97
21.09 95km JPN1st Aizu to Nasu Long Trail 19:46:30 h32
11.05 121km JPN3rd Aso Round Trail 30:29:59 h377
2018
02.12 50km JPN6th Kumano Old Trails 7:15:37 h36
17.11 106km JPN4th FunTrails100K Round 19:05:21 h31
07.10 71.5km JPN26th Hasetsune Cup - Japan Mountain Endurance Race 12:11:17 h110
12.05 108.7km JPN2nd Aso Round Trail 22:27:48 h109
2017
17.12 68km JPNCoast to Coast 70k Trail Run 8:01:08 h27
08.10 71.5km JPN25th Hasetsune Cup - Japan Mountain Endurance Race 13:57:44 h403
25.06 72.7km JPN4. Spatrail - Shima to Kusatsu 9:44:54 h93
10.06 45km JPN10th Skyline Trail Sugadaira 6:14:25 h71
2016
13.11 50km JPN8th Kanna Mountain Run II 8:57:33 h30
26.06 72.7km JPN3. Spatrail - Shima to Kusatsu 10:20:42 h120
12.06 45.4km JPN9th Skyline Trail Sugadaira 7:21:20 h154
22.05 100km JPN22nd Yatsugatake Nobeyama 100 km 13:42:27 h1100
2015
08.11 50km JPN7th Kanna Mountain Run II 8:48:20 h46
31.10 71.5km JPN23rd Hasetsune Cup - Japan Mountain Endurance Race 10:40:11 h166
13.09 53km JPN5th Hakuba Int. Trail Run 6:58:31 h111
12.04 63km JPN1st Okumikawa Power Trail 10:35:59 h84
15.03 72km JPN2nd Izu Trail Journey 12:06:11 h550
2014
12.10 71.5km JPN22nd Hasetsune Cup - Japan Mountain Endurance Race 14:07:06 h678
15.06 81.4km JPN1. Spatrail - Shima to Kusatsu 10:43:54 h60
2012
08.07 8h JPN18th 8-Hour Endurance Race Tokorozawa 61.674 km144