Jia (任佳) Ren
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Born : 1987
Cat. M35 Ultrarunner since 2019
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
22
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
Italy
ChinaItaly42,4%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 1 828; Σ finishers = 4 314. 1 828 / 4 314 × 100 = 42.37%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races562 km
> 100 km1
Longest race148,0 km
14ème Sur les Traces des Ducs de Savoie (TDS) — 26/8/2024
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 | |
|---|---|---|---|---|
| 2025 | ||||
| 18.10 | 60km | 11th Ninghai Ultra Trail - 50km |
9:57:57 h | 599 |
| 2024 | ||||
| 26.08 | 148km | 14ème Sur les Traces des Ducs de Savoie |
41:12:47 h | 863 |
| 19.04 | 96.8km | 6th Yunqiu Mountain Trail - DMY 100K |
19:34:07 h | 166 |
| 2023 | ||||
| 18.11 | 100km | 5th Yangxian Trail Challenge - 100km |
25:29:09 h | 59 |
| 21.10 | 50.7km | 5th Yunqiu Mountain Trail - MMY 50K |
7:37:28 h | 98 |
| 2019 | ||||
| 14.09 | 61km | 2nd Huanglong Extreme Endurance Race - XBD 60 |
14:34:51 h | 32 |
| 11.08 | 45km | 5th Ultra Mt.jiajinshan Challenge |
13:38:32 h | 18 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 26/8/2024 | 14ème Sur les Traces des Ducs de Savoie (TDS) | 148,00 | ×6 |
| ✓ 2 | 18/11/2023 | 5th Yangxian Trail Challenge - 100km | 100,00 | ×4 |
| ✓ 3 | 19/4/2024 | 6th Yunqiu Mountain Trail - DMY 100K | 96,80 | ×4 |
| ✓ 4 | 14/9/2019 | 2nd Huanglong Extreme Endurance Race - XBD 60 | 61,00 | ×2 |
| ✓ 5 | 18/10/2025 | 11th Ninghai Ultra Trail - 50km | 60,00 | ×2 |
| ✓ 6 | 21/10/2023 | 5th Yunqiu Mountain Trail - MMY 50K | 50,70 | ×2 |
| ✓ 7 | 11/8/2019 | 5th Ultra Mt.jiajinshan Challenge | 45,00 | ×2 |