Jia-Long (牛嘉龙) Niu
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11
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
South Korea
73,3%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 2 458; Σ finishers = 3 355. 2 458 / 3 355 × 100 = 73.26%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races885 km
> 100 km2
> 160 km1
Longest race168,0 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road11,3%
Trail88,7%
Records
HISTORY
11 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 12/7/2019 | 3rd Columbia 168 Ultra Trail Chongli Challenge Race | 168,00 | ×6 |
| ✓ 2 | 2/11/2018 | 2nd Yuhuang Ultra Endurance Race - 100 km | 116,00 | ×4 |
| ✓ 3 | 14/8/2020 | 4th Columbia 100 Ultra Trail Chongli Challenge Race | 100,00 | ×3 |
| ✓ 4 | 19/10/2019 | 2nd Yunqiu Mountain Trail - 100 km | 100,00 | ×3 |
| ✓ 5 | 31/10/2020 | 4th TNF 100 Ultra Trail Challenge Moganshan - 70 km | 69,60 | ×2 |
| ✓ 6 | 20/1/2024 | 6th GZ100 Guangzhou - 60 km Run | 64,00 | ×2 |
| ✓ 7 | 9/1/2021 | 5th GZ100 Guangzhou - 60 km Run | 60,00 | ×2 |
| ✓ 8 | 20/10/2018 | 6th Transjeju Int. Trail Run 50 km | 56,00 | ×2 |
| ✓ 9 | 8/6/2019 | 2nd Explore the West of Dalian 50 km | 50,90 | ×1 |
| ✓ 10 | 22/9/2019 | 8th Jiwu Hangzhou 50K | 50,00 | ×1 |
| ✓ 11 | 16/9/2018 | 7th Jiwu Hangzhou 50K | 50,00 | ×1 |