Ding-Rong (赵定荣) Zhao
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Born : 1965
Cat. M60 Ultrarunner since 2019
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
China39,2%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 967; Σ finishers = 2 464. 967 / 2 464 × 100 = 39.25%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races468 km
Longest race100,0 km
3rd Weihai Ultra Trail 100km — 31/5/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 22.03 | 50km | 1st Wenxian Baima Trail Race |
10:06:51 h | 38 |
| 2025 | ||||
| 08.11 | 99.7km | 1st Ultra-Trail Shudao by UTMB - DSD |
17:47:04 h | 188 |
| 31.05 | 100km | 3rd Weihai Ultra Trail 100km |
20:36:32 h | 174 |
| 2023 | ||||
| 12.08 | 55km | 1st Ruoergai National Park Skyline Off-Road |
8:54:55 h | 172 |
| 2020 | ||||
| 27.11 | 50km | 6th Ultra-Trail Three Gorges 50 km |
10:33:59 h | 23 |
| 2019 | ||||
| 30.11 | 60.6km | 1st Chengdu Trail 60+ Challenge - Tanshan Mountain |
10:27:00 h | 56 |
| 03.08 | 53km | 3rd Maxi-Race China - Zengjia Mountain |
7:01:41 h | 323 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 31/5/2025 | 3rd Weihai Ultra Trail 100km | 100,00 | ×5 |
| ✓ 2 | 8/11/2025 | 1st Ultra-Trail Shudao by UTMB - DSD | 99,70 | ×4 |
| ✓ 3 | 30/11/2019 | 1st Chengdu Trail 60+ Challenge - Tanshan Mountain | 60,60 | ×3 |
| ✓ 4 | 12/8/2023 | 1st Ruoergai National Park Skyline Off-Road | 55,00 | ×2 |
| ✓ 5 | 3/8/2019 | 3rd Maxi-Race China - Zengjia Mountain | 53,00 | ×2 |
| ✓ 6 | 22/3/2026 | 1st Wenxian Baima Trail Race | 50,00 | ×2 |
| ✓ 7 | 27/11/2020 | 6th Ultra-Trail Three Gorges 50 km | 50,00 | ×2 |