Yuan (张缘) Zhang
External sources
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Born : 1983
Cat. W40 Ultrarunner since 2023
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
16
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
Japan
ChinaJapan36,3%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 805; Σ finishers = 2 218. 805 / 2 218 × 100 = 36.29%. A win adds 0 to the numerator. Lower is better.
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 08.11 | 60km | 3rd Mingyue Mountrain Ultra Trail |
9:41:05 h | 88 |
| 25.10 | 50km | 1st Jingxi Ancient Trail Run 50 |
16:26:44 h | 191 |
| 2024 | ||||
| 26.04 | 70km | 3rd KAI 70k |
13:40:56 h | 308 |
| 2023 | ||||
| 05.11 | 50km | 1st Ultra Trail Mt.Laoying |
8:45:32 h | 38 |
| 21.10 | 50.7km | 5th Yunqiu Mountain Trail - MMY 50K |
8:22:24 h | 185 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 26/4/2024 | 3rd KAI 70k | 70,00 | ×4 |
| ✓ 2 | 8/11/2025 | 3rd Mingyue Mountrain Ultra Trail | 60,00 | ×3 |
| ✓ 3 | 21/10/2023 | 5th Yunqiu Mountain Trail - MMY 50K | 50,70 | ×3 |
| ✓ 4 | 25/10/2025 | 1st Jingxi Ancient Trail Run 50 | 50,00 | ×3 |
| ✓ 5 | 5/11/2023 | 1st Ultra Trail Mt.Laoying | 50,00 | ×3 |