Zhen-Hua (程振华) Cheng
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6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
19
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 ?
China
55,9%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 701; Σ finishers = 1 253. 701 / 1 253 × 100 = 55.95%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races417 km
Longest race100,0 km
3rd Xiaoxiang 100 Trail - langshan — 18/5/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 13.09 | 55km | 14:58:04 h | 342 | |
| 2023 | ||||
| 22.04 | 58km | 13:35:10 h | 133 | |
| 2019 | ||||
| 18.05 | 100km | 24:19:25 h | 63 | |
| 13.04 | 95km | 21:45:34 h | 90 | |
| 2018 | ||||
| 24.11 | 50km | 11:02:45 h | 64 | |
| 02.11 | 59km | 9:58:28 h | 15 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/5/2019 | 3rd Xiaoxiang 100 Trail - langshan | 100,00 | ×5 |
| ✓ 2 | 13/4/2019 | 1st Maxi-Race China - Xixia 100km | 95,00 | ×5 |
| ✓ 3 | 2/11/2018 | 2nd Yuhuang Ultra Endurance Race - 50 km | 59,00 | ×3 |
| ✓ 4 | 22/4/2023 | 2nd The Ultra-Trail Huizhou - 60 | 58,00 | ×3 |
| ✓ 5 | 13/9/2025 | 9th Trail Mt Wugong 50 km | 55,00 | ×2 |
| ✓ 6 | 24/11/2018 | 1st Mountain Hard China - Xichuan 50 km | 50,00 | ×2 |