Tsuyoshi (大下剛) Oshita
ID 1808671
Born : 1975 Cat. M50 Ultrarunner since 2022 JPN
12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
44,0%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 4 738; Σ finishers = 10 767. 4 738 / 10 767 × 100 = 44.00%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed12
Km — ultra races1 233 km
> 100 km5
> 160 km2
Longest race200,0 km
16th Little Edo Oedo 200k — 14/3/2026

Km per year (ultra races)

142
2 races
2022
251
3 races
2023
326
3 races
2024
315
3 races
2025
200
1 race
2026

Race types (share of distance)

Road33,7%
Trail66,3%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km8h25'55100 km11h35'50

HISTORY

12 race(s)
DateRacePerf.Rk
2026
14.03 200km JPN16th Little Edo Oedo 200k 31:16:28 h79
2025
20.07 99.5km JPN17th OSJ Ontake 100km Ultra Trail 12:41:13 h145
18.05 100km JPN31th Yatsugatake Nobeyama 100 km 11:35:50 h210
15.03 115km JPN15th Oedo Night run 115k 14:11:32 h3 🥉
2024
01.12 50km JPN11th Trainic world Soto-Chichibu Trail Run 50km 8:25:55 h65
14.07 109.2km JPN16th OSJ Ontake 100km Ultra Trail 14:19:14 h232
26.04 167km JPN9th Ultra-Trail Mt. Fuji 39:44:53 h727
2023
10.12 70km JPN10th Izu Trail Journey 11:32:46 h642
08.10 71.5km JPN31th Hasetsune Cup - Japan Mountain Endurance Race 16:08:46 h690
20.05 109.2km JPN8th Trainic World 100 km in Sai-No-Kuni 26:58:20 h173
2022
11.12 70km JPN9th Izu Trail Journey 11:57:27 h798
09.10 71.5km JPN30th Hasetsune Cup - Japan Mountain Endurance Race 20:49:32 h986