Ryuji (小山田隆二) Oyamada
ID 213716
Born : 1972 Cat. M50 Ultrarunner since 2011 JPN
40
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
67
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 ?JPNJapanTHAThailand
32,3%
Rank quotient ?This runner's calculation uses 40 eligible race(s): Σ(rank − 1) = 6 803; Σ finishers = 21 040. 6 803 / 21 040 × 100 = 32.33%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed40
Km — ultra races5 617 km
> 100 km29
> 160 km27
> 200 km3
> 24h4
> 48h1
Longest race207,9 km
3rd Last Samurai Standing Backyard Ultra - Fukushima — 19/11/2022

Km per year (ultra races)

370
2 races
2022
263
2 races
2023
821
5 races
2024
497
3 races
2025
167
1 race
2026

Race types (share of distance)

Road1,8%
Trail83,9%
Elim.14,3%

Records

50 km6h05'42100 km12h13'49100 mi22h58'49Backyard31 loops

HISTORY

40 race(s)
DateRacePerf.Rk
2026
24.04 167km JPN11th Ultra-Trail Mt. Fuji 34:21:48 h312
2025
05.12 100mi THA2nd Chiangmai Thailand by UTMB - CHIANG DAO 100 36:42:05 h110
10.10 169km JPN5th Lake Biwa 100 44:54:50 h127
25.04 167km JPN10th Ultra-Trail Mt. Fuji 33:52:52 h300
2024
16.11 100Miles JPN10th Sengenyama 100 30:07:00 h13
11.10 169km JPN4th Lake Biwa 100 40:13:22 h65
14.09 163.1km JPN16th Shinetsu Five Mountains Trail 100 mile 26:47:35 h115
13.07 100mi JPN16th OSJ Ontake 100 Mile Ultra Trail 23:08:35 h60
26.04 167km JPN9th Ultra-Trail Mt. Fuji 34:10:07 h267
2023
16.09 162.6km JPN15th Shinetsu Five Mountains Trail 100 mile 31:13:29 h138
08.07 100km JPN1st Shiga Kogen 100 18:43:52 h74
2022
19.11 Backyard Ultra JPN3rd Last Samurai Standing Backyard Ultra - Fukushima 207.886 km (31h)7
17.09 162.6km JPN14th Shinetsu Five Mountains Trail 100 mile 30:21:34 h91
2021
20.11 Backyard Ultra JPN2nd Last Samurai Standing Backyard Ultra - Tokyo 201.180 km (30h)11
09.10 168.5km JPN7th OSJ Koumi 100 30:46:51 h74
2020
13.12 66km JPN7th Izu Trail Journey 9:00:40 h198
20.11 Backyard Ultra JPN1st Last Samurai Standing Backyard Ultra - Tokyo 201.180 km (30h)10
10.10 100mi JPN6th OSJ Koumi 100 32:01:14 h36
08.02 Backyard Ultra JPN1st Last Samurai Standing Backyard Ultra - Tokyo 194.474 km (29h)6
2019
14.09 100mi JPN11th Shinetsu Five Mountains Trail 100 mile 28:11:05 h94
2018
06.10 100mi JPN5th OSJ Koumi 100 32:55:44 h39
15.09 100mi JPN10th Shinetsu Five Mountains Trail 100 mile 29:24:21 h127
27.04 170km JPN5th Ultra-Trail Mt. Fuji 34:26:45 h184
2017
16.09 102km JPN9th Shinetsu Five Mountains Trail 100 mile 16:22:10 h103
15.07 100mi JPN10th OSJ Ontake 100 Mile Ultra Trail 23:18:08 h46
2016
16.07 100mi JPN9th OSJ Ontake 100 Mile Ultra Trail 22:58:49 h45
24.04 70km JPN2nd Okumikawa Power Trail 10:24:21 h113
2015
25.09 170.3km JPN4th Ultra-Trail Mt. Fuji 31:41:19 h92
18.07 100km JPN8th OSJ Ontake 100km Ultra Trail 12:13:49 h50
15.03 72km JPN2nd Izu Trail Journey 10:49:35 h280
2014
09.11 50km JPN6th Kanna Mountain Run 7:14:53 h15
20.09 120km JPN1st SkyView Ultra-Trail - Yamada Noboru Memorial Cup 23:41:52 h92
25.04 100mi JPN3rd Ultra-Trail Mt. Fuji 37:31:11 h270
2013
06.10 50km JPN7th Madarao Forest Trails 50km 6:05:42 h54
07.09 100mi JPN2nd OSJ Yatsugatake Super Trail 100 miles race 27:54:08 h34
26.04 100mi JPN2nd Ultra-Trail Mount Fuji 40:35:19 h390
10.03 72km JPN1st Izu Trail Journey 10:58:08 h395
2012
07.10 71.5km JPN20th Hasetsune Cup - Japan Mountain Endurance Race 14:52:41 h715
2011
09.10 71.5km JPN19th Hasetsune Cup - Japan Mountain Endurance Race 20:21:07 h1363
17.07 100km JPN4th OSJ Ontake 100km Ultra Trail 17:32:18 h328