Ryousuke (大森亮介) Oomori
Born : 1976 Cat. M50 Ultrarunner since 2016 JPN
26
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
1
Countries visited ?JPNJapan
39,2%
Rank quotient ?This runner's calculation uses 26 eligible race(s): Σ(rank − 1) = 3 351; Σ finishers = 8 558. 3 351 / 8 558 × 100 = 39.16%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed26
Km — ultra races2 841 km
> 100 km15
> 160 km8
Longest race168,0 km

Km per year (ultra races)

335
3 races
2022
272
2 races
2023
372
3 races
2024
528
4 races
2025
161
1 race
2026

Race types (share of distance)

Road7,0%
Trail93,0%

HISTORY

26 race(s)
DateRacePerf.Rk
2026
16.05 100mi JPN11th Trainic World 100 Mile in Sai-No-Kuni 34:37:04 h86
2025
21.12 100km JPN8th Okinawa 100km Ultramarathon 9:53:27 h56
13.09 162.2km JPN17th Shinetsu Five Mountains Trail 100 mile 30:53:31 h138
21.06 105km JPN1st Kaga Spa by UTMB - Kaga Spa Trail Endurance100 23:03:02 h180
17.05 100mi JPN10th Trainic World 100 Mile in Sai-No-Kuni 33:42:29 h65
2024
15.12 50km JPN9th Minami-aso caldera Trail 7:22:59 h20
16.11 100mi JPN10th FunTrails100M Round 30:48:24 h30
18.05 100mi JPN9th Trainic World 100 Mile in Sai-No-Kuni 33:25:18 h39
2023
13.05 105km JPN1st Aso Volcano Trail 23:35:01 h46
21.04 167km JPN8th Ultra-Trail Mt. Fuji 35:38:04 h542
2022
18.12 100km JPN5th Okinawa 100km Ultramarathon 10:46:15 h83
11.08 68.4km JPN1st Yacchiro Dragon Trail 12:12:20 h8
05.03 167km JPN1st Kumagawa Revival Trail 40:22:37 h118
2021
20.11 106km JPN7th FunTrails100K Round 23:18:56 h177
25.07 60km JPN9th Kirishima Ebino-kougen Extreme Trail 9:35:12 h56
03.07 104km JPN2nd Imuta Trail - 104 km 29:19:54 h6
2020
13.12 66km JPN7th Izu Trail Journey 11:25:43 h695
17.10 168km JPN23th Mt. Rocco Cannonball Run - 168 km Rainbow 31:02:00 h4
2019
01.09 64km JPN3rd Mizukami Mountain Party 13:31:46 h107
11.05 121km JPN3rd Aso Round Trail 29:54:24 h336
2018
26.08 64km JPN2nd Mizukami Mountain Party 13:03:29 h44
21.07 67.5km JPN6th Kirishima Ebino-kougen Extreme Trail 10:31:44 h87
12.05 108.7km JPN2nd Aso Round Trail 22:03:56 h89
2017
23.07 67.5km JPN5th Kirishima Ebino-kougen Extreme Trail 11:25:42 h140
13.05 108.7km JPN1st Aso Round Trail 25:15:48 h94
2016
24.07 67.5km JPN4th Kirishima Ebino-kougen Extreme Trail 11:10:44 h131