Jie-Bo (任洁波) Ren
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13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
27
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
Hong Kong
6,8%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 610; Σ finishers = 8 994. 610 / 8 994 × 100 = 6.78%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races957 km
> 100 km2
Longest race109,6 km
9th Ninghai Ultra Trail - 100km — 15/4/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
13 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/4/2023 | 9th Ninghai Ultra Trail - 100km | 109,60 | ×4 |
| ✓ 2 | 17/10/2020 | 8th Ninghai Ultra Trail - 100km | 108,00 | ×4 |
| ✓ 3 | 20/1/2024 | 14th Hong Kong 100 Ultra Trail Race | 100,00 | ×3 |
| ✓ 4 | 18/2/2023 | 13th Hong Kong 100 Ultra Trail Race | 100,00 | ×3 |
| ✓ 5 | 22/5/2021 | 5th TNF 100 Ultra Trail Challenge Moganshan - 100 km | 99,70 | ×3 |
| ✓ 6 | 15/4/2017 | 3rd Jiangnan 100 Ultra Trail - 66km | 66,00 | ×2 |
| ✓ 7 | 19/10/2024 | 10th Ninghai Ultra Trail - 50km | 60,00 | ×2 |
| ✓ 8 | 8/7/2023 | 7th Columbia 57 Ultra Trail Chongli Challenge Race | 57,00 | ×2 |
| ✓ 9 | 31/3/2024 | 3rd Welnig Golden Coast Run | 55,00 | ×2 |
| ✓ 10 | 7/11/2020 | 6th Ultra Trail Mt Siguniang 50 km | 51,40 | ×1 |
| ✓ 11 | 25/10/2020 | 7th Tour de Huangnichuan 50k | 50,00 | ×1 |
| ✓ 12 | 14/4/2018 | 4th Ultimate Tsaigu Trail Kuocang - 50 km | 50,00 | ×1 |
| ✓ 13 | 22/10/2016 | 1st Peak of Jiang Nan Skyrunning | 50,00 | ×1 |