Masahito (星川正仁) Hoshikawa
Born : 1973 Cat. M50 Ultrarunner since 2013 JPN
40
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
51
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
6
Countries visited ?CHNChinaFRAFranceJPNJapanKORSouth KoreaTHAThailandTPETaiwan
82,2%
Rank quotient ?This runner's calculation uses 40 eligible race(s): Σ(rank − 1) = 12 345; Σ finishers = 15 027. 12 345 / 15 027 × 100 = 82.15%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed40
Km — ultra races3 567 km
> 100 km12
> 160 km4
Longest race176,0 km

Km per year (ultra races)

584
5 races
2022
517
6 races
2023
569
6 races
2024
376
5 races
2025
165
2 races
2026

Race types (share of distance)

Road7,3%
Trail92,7%

HISTORY

40 race(s)
DateRacePerf.Rk
2026
20.06 105km JPN2nd Kaga Spa by UTMB - Kaga Spa Trail Endurance100 25:52:16 h619
06.06 60km JPN3rd Gran Trail Minakami - 60km 13:34:47 h21
2025
12.10 71.5km JPN33th Hasetsune Cup - Japan Mountain Endurance Race 22:06:54 h1102
10.08 50km JPN4th Yacchiro Dragon Trail 12:27:05 h150
20.07 99.5km JPN17th OSJ Ontake 100km Ultra Trail 18:30:58 h802
16.05 103.7km CHN1st Ultra-Trail Great Wall by UTMB - 100K 22:18:44 h379
06.04 51.4km JPN3rd AYABE Trailrun 8:30:58 h187
2024
28.12 80km TPE7th Dragon, Tiger, Phoenix Trail 80 km 26:36:37 h30
30.08 176km FRA21ème Ultra Trail Tour du Mont Blanc 45:41:53 h1627
10.08 61.3km JPN5th Osaka Natsunojin Kurondo Rondo - 60 km 14:29:14 h41
29.06 90km JPN3rd Central Alps Skyline Japan 22:18:58 h113
14.04 50km JPN6th Onigajo Peaks Trail 10:27:58 h78
30.03 112km JPN30th Mt. Rocco Cannonball Run - 112 km Power 22:39:55 h79
2023
09.12 96.5km THA4th Doi Inthanon Thailand by UTMB - ELEPHANT 100 26:58:57 h554
04.11 50km JPN10th Nakanoto Treasure Trail Run Festival 7:53:54 h83
21.10 112km JPN29th Mt. Rocco Cannonball Run - 112 km Power 20:43:28 h39
07.10 100km KOR10th TransJeju by UTMB 100 23:39:41 h643
18.03 58km JPN1st Hikami Aogaki Great Trail 20:27:44 h30
04.03 100km JPN1st Minonokuni Yamajiro Trail 100 32:19:00 h59
2022
28.10 112km JPN27th Mt. Rocco Cannonball Run - 112 km Power 21:55:00 h84
19.06 60km JPN8th Echigo Country Trail 11:24:57 h157
22.05 77km JPN27th Saba Highway Ultramarathon 11:42:48 h245
22.04 167km JPN7th Ultra-Trail Mt. Fuji 39:11:21 h982
19.03 168km JPN26th Mt. Rocco Cannonball Run - 168 km Rainbow 43:20:20 h26
2021
16.10 112km JPN25th Mt. Rocco Cannonball Run - 112 km Power 22:50:00 h87
09.10 59km JPN5th Kyoto Grand Traverse 12:58:51 h130
20.03 168km JPN24th Mt. Rocco Cannonball Run - 168 km Rainbow 41:34:12 h21
2020
17.10 112km JPN23th Mt. Rocco Cannonball Run - 112 km Power 26:30:00 h119
2019
30.11 75km TPE4th Formosa Trail 75km 18:20:00 h147
03.11 48km JPN3rd Ninja Trail Run 8:52:14 h243
2018
19.08 55km JPN4th Mt. Taisetsu Tokachidake Trail 9:29:47 h120
20.04 100km CHN6th DL100 Ultra Endurance Race 27:41:28 h147
2017
01.07 80km JPN7th Utsukushigahara 80 km Trail Run 15:27:58 h640
13.05 108.7km JPN1st Aso Round Trail 29:18:48 h220
05.03 50km JPN8th OSJ Jungle Trail 50K Amami 8:12:41 h85
2016
16.12 70km JPNCoast to Coast 70k Trail Run 11:38:26 h353
2015
18.07 100km JPN8th OSJ Ontake 100km Ultra Trail 18:21:42 h678
2014
20.07 65km JPN5th Nozawa Onsen 4100D Mountain Trail 17:26:27 h481
15.06 81.4km JPN1. Spatrail - Shima to Kusatsu 14:01:25 h397
2013
09.06 72km JPN2nd Hida Takayama 72 km Ultramarathon 10:48:57 h387