Dan (刘丹) Liu
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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
3
Countries visited ?
China
Hong Kong
Thailand
34,6%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 5 224; Σ finishers = 15 087. 5 224 / 15 087 × 100 = 34.63%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races981 km
Longest race100,0 km
3rd Xtrail Kanas 100 km Ultra-Trail Run — 2/6/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road4,9%
Trail95,1%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0
Records
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/6/2023 | 3rd Xtrail Kanas 100 km Ultra-Trail Run | 100,00 | ×3 |
| ✓ 2 | 12/9/2015 | 2nd Great Walker Beijing - 100 km | 96,00 | ×3 |
| ✓ 3 | 2/11/2024 | 9th Ultra Trail Mt Siguniang 75 km | 75,00 | ×2 |
| ✓ 4 | 17/9/2023 | 3rd Ultra Trail Shennongjia 65 km Salt Road Challenge | 67,30 | ×2 |
| ✓ 5 | 17/1/2026 | 8th GZ100 Guangzhou - 60 km Run | 64,00 | ×2 |
| ✓ 6 | 10/4/2021 | 1st Beauty Mountain Ultra Trail | 60,00 | ×2 |
| ✓ 7 | 15/4/2023 | 9th Ninghai Ultra Trail - 50km | 57,40 | ×2 |
| ✓ 8 | 14/12/2024 | 9th The North Face 50 Hong Kong | 56,10 | ×2 |
| ✓ 9 | 29/3/2025 | 3rd Huangshan huizhou trail race | 55,00 | ×2 |
| ✓ 10 | 10/9/2016 | 3rd Great Walker Beijing - 50 km | 52,20 | ×2 |
| ✓ 11 | 12/11/2022 | 7th Ultra Trail Mt Siguniang 50 km | 52,10 | ×2 |
| ✓ 12 | 22/4/2017 | 4th Great Walker Chengdu - 50 km | 49,10 | ×1 |
| ✓ 13 | 6/12/2025 | 2nd Chiangmai Thailand by UTMB - HMONG 50-DAY | 48,00 | ×1 |
| ✓ 14 | 21/5/2023 | 1st Huangguoshu Ultra Run | 48,00 | ×1 |
| ✓ 15 | 22/5/2021 | 8th Great Walker Chengdu - 50 km | 45,60 | ×1 |