Qing-Yang (杜庆阳) Du
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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.
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
2
Countries visited ?
China
Hong Kong
57,0%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 1 604; Σ finishers = 2 815. 1 604 / 2 815 × 100 = 56.98%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races906 km
> 100 km2
Longest race115,0 km
1st Ultra-Trail Tai Mo Shan (TTF) 115 km — 1/1/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
14 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 1/1/2016 | 1st Ultra-Trail Tai Mo Shan (TTF) 115 km | 115,00 | ×4 |
| ✓ 2 | 14/11/2015 | 1st China Ultra 100 | 100,80 | ×4 |
| ✓ 3 | 23/7/2016 | 3rd Zhangye Qilian Mountain 100 km Trail Challenge | 100,00 | ×4 |
| ✓ 4 | 18/4/2015 | 3rd DL100 Ultra Endurance Race | 100,00 | ×4 |
| ✓ 5 | 28/3/2015 | 1st Wuzhou Trail 56km | 56,00 | ×2 |
| ✓ 6 | 10/11/2018 | 3rd China 100 mountain cross - 50 km Yuyao | 50,00 | ×2 |
| ✓ 7 | 26/11/2017 | 1st Shengzhou Trail Challenge | 50,00 | ×2 |
| ✓ 8 | 22/10/2016 | 1st Peak of Jiang Nan Skyrunning | 50,00 | ×2 |
| ✓ 9 | 7/6/2014 | 2nd Wuyuezhai International Trail Challenge | 50,00 | ×2 |
| ✓ 10 | 5/10/2013 | 1st Ninghai Ultra Trail | 50,00 | ×2 |
| ✓ 11 | 20/12/2020 | 4th Road of Tang Poetry - Shaoxing | 49,00 | ×1 |
| ✓ 12 | 8/12/2019 | 3rd Road of Tang Poetry - Shaoxing | 45,00 | ×1 |
| ✓ 13 | 2/12/2018 | 2nd Road of Tang Poetry - Shaoxing | 45,00 | ×1 |
| ✓ 14 | 21/9/2014 | 2nd Ninghai Ultra Trail | 45,00 | ×1 |