Zhi-Ruo (马之若) Ma
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Born : 1992
Cat. M23 Ultrarunner since 2016
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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
ChinaHong Kong27,4%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 1 230; Σ finishers = 4 494. 1 230 / 4 494 × 100 = 27.37%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races937 km
> 100 km1
Longest race105,0 km
3rd Chando Himalaya Energy Ultra Trail - 100 km — 12/9/2020
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road5,1%
Trail94,9%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
15 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 12/9/2020 | 3rd Chando Himalaya Energy Ultra Trail - 100 km | 105,00 | ×4 |
| ✓ 2 | 18/1/2020 | 10th Hong Kong 100 Ultra Trail Race | 100,00 | ×3 |
| ✓ 3 | 12/7/2019 | 3rd Columbia 100 Ultra Trail Chongli Challenge Race | 100,00 | ×3 |
| ✓ 4 | 20/4/2019 | 5th Ultimate Tsaigu Trail Kuocang - 80 km | 80,00 | ×3 |
| ✓ 5 | 18/2/2023 | 13th Hong Kong 100 Ultra Trail Race - Half | 56,00 | ×2 |
| ✓ 6 | 11/12/2016 | 1st Yangtze River Three Gorges Trail Running | 54,00 | ×2 |
| ✓ 7 | 4/1/2020 | 2nd 9-Peak Global Trail - 50 km | 53,10 | ×2 |
| ✓ 8 | 6/7/2025 | 6th Huanglong Ultra Trail - XBD 50 | 50,00 | ×1 |
| ✓ 9 | 2/6/2025 | 1st Trail Shambhala | 50,00 | ×1 |
| ✓ 10 | 5/12/2020 | 4th China 100 mountain cross - 50 km Yangshuo | 50,00 | ×1 |
| ✓ 11 | 21/4/2018 | 3rd XTrail Wulong 50K | 50,00 | ×1 |
| ✓ 12 | 8/4/2017 | Muye Trail Mount Qingcheng Int. Challenge | 50,00 | ×1 |
| ✓ 13 | 14/12/2019 | 6th Chongqing 6h - Zhaomu Mountain | 48,00 | ×1 |
| ✓ 14 | 29/4/2018 | 2nd Yading Kora Ultra | 46,00 | ×1 |
| ✓ 15 | 3/11/2018 | 4th Ultra Trail Mt Siguniang 45 km | 45,00 | ×1 |