Kazuki (向井和樹) Mukai
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13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
51,6%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 2 799; Σ finishers = 5 422. 2 799 / 5 422 × 100 = 51.62%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races781 km
Longest race80,0 km
5th OSJ Yamanaka Onsen Trail Run — 22/6/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road42,7%
Trail57,3%
Records
HISTORY
13 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/6/2019 | 5th OSJ Yamanaka Onsen Trail Run | 80,00 | ×3 |
| ✓ 2 | 21/9/2019 | 6th SkyView Ultra-Trail 70 - Yamada Noboru Memorial Cup | 75,00 | ×3 |
| ✓ 3 | 6/10/2019 | 5th Gasando Trail running race | 73,00 | ×2 |
| ✓ 4 | 14/10/2018 | 4th Gasando Trail running race | 73,00 | ×2 |
| ✓ 5 | 7/6/2015 | 4th Hida Takayama 72 km Ultramarathon | 72,00 | ×2 |
| ✓ 6 | 18/10/2015 | 4th Noto Peninsula 60 km Ultra Marathon | 60,00 | ×2 |
| ✓ 7 | 10/5/2014 | 3rd Tojinbo 52 km Ultramarathon | 52,00 | ×2 |
| ✓ 8 | 10/9/2017 | 7th Hakuba Int. Trail Run | 51,40 | ×2 |
| ✓ 9 | 5/11/2017 | 4th Nakanoto Treasure Trail Run Festival | 50,00 | ×2 |
| ✓ 10 | 11/9/2016 | 4th 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |
| ✓ 11 | 13/9/2015 | 3rd 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |
| ✓ 12 | 21/9/2014 | 2nd 50 km Ultramarathon Hakusan-Shirakawago | 50,00 | ×2 |
| ✓ 13 | 10/6/2017 | 10th Skyline Trail Sugadaira | 45,00 | ×1 |