Zhi-Cheng (郑之成) Zheng
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Born : 1994
Cat. M23 Ultrarunner since 2024
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
17
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
5
Countries visited ?China
Hong Kong
Malaysia
Singapore
Thailand
ChinaHong KongMalaysiaSingaporeThailand48,8%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 1 902; Σ finishers = 3 897. 1 902 / 3 897 × 100 = 48.81%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races368 km
Longest race100,0 km
16th Hong Kong 100 Ultra Trail Race — 24/1/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 24/1/2026 | 16th Hong Kong 100 Ultra Trail Race | 100,00 | ×5 |
| ✓ 2 | 12/7/2025 | 9th Columbia 70 Ultra Trail Chongli Challenge Race | 70,00 | ×4 |
| ✓ 3 | 29/6/2025 | 4th Ultra Trail Singapore (UTSG) | 50,00 | ×2 |
| ✓ 4 | 29/6/2024 | 3rd Ultra Trail Singapore (UTSG) | 50,00 | ×2 |
| ✓ 5 | 2/3/2024 | 8th Borneo Ultra Trail Marathon BUTM - 50 km | 50,00 | ×2 |
| ✓ 6 | 6/12/2025 | 2nd Chiangmai Thailand by UTMB - HMONG 50-NIGHT | 48,00 | ×2 |