Masakazu (田中正一) Tanaka
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14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
29
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 ?
Japan
48,2%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 4 602; Σ finishers = 9 557. 4 602 / 9 557 × 100 = 48.15%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 101 km
> 100 km2
Longest race110,0 km
7th Shinetsu Five Mountains Trail 110km — 22/9/2015
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
14 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/9/2015 | 7th Shinetsu Five Mountains Trail 110km | 110,00 | ×3 |
| ✓ 2 | 15/9/2013 | 5th Shinetsu Five Mountains Trail 110km | 110,00 | ×3 |
| ✓ 3 | 17/5/2015 | 21st Yatsugatake Nobeyama 100 km | 100,00 | ×3 |
| ✓ 4 | 18/5/2014 | 20th Yatsugatake Nobeyama 100 km | 100,00 | ×3 |
| ✓ 5 | 26/4/2013 | 2nd Shizuoka to Yamanashi (STY) | 84,00 | ×2 |
| ✓ 6 | 2/7/2016 | 6th Utsukushigahara 80 km Trail Run | 80,00 | ×2 |
| ✓ 7 | 4/7/2015 | 5th Utsukushigahara 80 km Trail Run | 80,00 | ×2 |
| ✓ 8 | 25/6/2017 | 4. Spatrail - Shima to Kusatsu | 72,70 | ×2 |
| ✓ 9 | 15/3/2015 | 2nd Izu Trail Journey | 72,00 | ×2 |
| ✓ 10 | 10/3/2013 | 1st Izu Trail Journey | 72,00 | ×2 |
| ✓ 11 | 31/8/2013 | 3rd Utsukushigahara 70 km Trail Run | 70,00 | ×2 |
| ✓ 12 | 7/10/2012 | 6th Madarao Forest Trails 50km | 50,00 | ×1 |
| ✓ 13 | 16/9/2012 | 2nd Hakuba Int. Trail Run | 50,00 | ×1 |
| ✓ 14 | 15/9/1996 | 2nd Yatsugatake Nobeyama 50 km | 50,00 | ×1 |