Toshiyuki (大嶋利征) Oshima
Born : 1986 Cat. M40 Ultrarunner since 2012 JPN
35
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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
59,6%
Rank quotient ?This runner's calculation uses 35 eligible race(s): Σ(rank − 1) = 8 959; Σ finishers = 15 032. 8 959 / 15 032 × 100 = 59.60%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed35
Km — ultra races2 696 km
> 100 km4
> 160 km1
Longest race167,0 km

Km per year (ultra races)

371
4 races
2022
100
1 race
2023
265
4 races
2024
166
3 races
2025
51
1 race
2026

Race types (share of distance)

Road30,0%
Trail70,0%

HISTORY

35 race(s)
DateRacePerf.Rk
2026
05.04 51.4km JPN4th AYABE Trailrun 9:14:10 h286
2025
07.09 50km JPN14th Hakuba Int. Trail Run 9:27:42 h216
20.07 65km JPN16th Nozawa Onsen 4100D Mountain Trail 14:05:53 h163
06.04 51.4km JPN3rd AYABE Trailrun 8:31:04 h188
2024
22.09 80km JPN10th SkyViewTrail Memorial Cup 16:33:07 h129
14.07 65km JPN15th Nozawa Onsen 4100D Mountain Trail 11:59:47 h134
11.05 50km JPN10th Mt. Hiei Int. 50 km Trail Run 9:49:17 h296
20.04 70km JPN3rd Atsumi Peninsula Ultra Nature Run - 70km 9:29:31 h54
2023
04.06 100km JPN2. OSJ Aizu Bandaisan Ultramarathon - 100 km 14:17:28 h106
2022
04.09 53.4km JPN15th OSJ Adatara Trail 50K 11:38:26 h147
02.07 50km JPN12th Utsukushigahara 50 km Trail Run 10:28:55 h187
22.04 167km JPN7th Ultra-Trail Mt. Fuji 38:59:52 h951
05.03 101km JPN1st Kumagawa Revival Trail 23:25:17 h144
2021
23.07 65km JPN12th Nozawa Onsen 4100D Mountain Trail 10:38:03 h151
2019
21.09 143km JPN6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup 33:54:06 h332
28.07 70km JPN7th Mt. Taisetsu Trail Journey 12:17:38 h88
07.04 70km JPN5th Okumikawa Power Trail 13:16:28 h499
2018
22.09 129km JPN5th SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 33:40:10 h425
16.09 88km JPN9th Akiota Yajirushi Marathon 88km 12:24:12 h203
14.07 65km JPN9th Nozawa Onsen 4100D Mountain Trail 12:34:45 h68
30.06 45km JPN8th Utsukushigahara 45 km Trail Run 5:56:02 h32
24.06 72.7km JPN5. Spatrail - Shima to Kusatsu 11:39:11 h221
20.05 100km JPN24th Yatsugatake Nobeyama 100 km 13:39:32 h1203
2017
15.07 65km JPN8th Nozawa Onsen 4100D Mountain Trail 12:03:38 h146
01.07 80km JPN7th Utsukushigahara 80 km Trail Run 14:08:13 h549
26.03 100km JPN13th Izu Oshima Ultra 100 km 13:10:06 h93
2016
16.07 65km JPN7th Nozawa Onsen 4100D Mountain Trail 12:37:16 h179
02.07 45km JPN6th Utsukushigahara 45 km Trail Run 6:59:26 h129
2015
26.09 76.7km JPN4th Shizuoka to Yamanashi 18:09:33 h520
20.09 88km JPN6th Akiota Yajirushi Marathon 88km 12:49:49 h389
19.07 65km JPN6th Nozawa Onsen 4100D Mountain Trail 11:35:49 h111
04.07 45km JPN5th Utsukushigahara 45 km Trail Run 5:51:14 h27
2014
14.09 88km JPN5th Akiota Yajirushi Marathon 88km 12:19:15 h283
2013
15.09 88km JPN4th Akiota Yajirushi Marathon 88km 11:00:22 h186
2012
16.09 88km JPN3rd Akiota Yajirushi Marathon 88km 11:08:44 h159