Xuan (戴暄) Dai
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16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
55,9%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 5 934; Σ finishers = 10 619. 5 934 / 10 619 × 100 = 55.88%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races925 km
Longest race100,0 km
8th Hong Kong 100 Ultra Trail Race — 27/1/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road5,4%
Trail94,6%
Records
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/1/2018 | 8th Hong Kong 100 Ultra Trail Race | 100,00 | ×4 |
| ✓ 2 | 20/11/2015 | 34th Oxfam Trailwalker Hong Kong | 100,00 | ×4 |
| ✓ 3 | 10/9/2016 | 1st Devil's Ridge Ultra 70K | 70,00 | ×2 |
| ✓ 4 | 4/9/2016 | 2nd Trail Mt Wugong | 56,50 | ×2 |
| ✓ 5 | 13/10/2018 | 6th Ninghai Ultra Trail - 50km | 54,40 | ×2 |
| ✓ 6 | 2/8/2020 | 5th Peak of Chongli Trail 50 km | 50,00 | ×2 |
| ✓ 7 | 23/6/2018 | 3rd Qingdao Laoshan 50K Ultra Trail | 50,00 | ×2 |
| ✓ 8 | 1/1/2017 | 2nd Ultra-Trail Tai Mo Shan (YTF) 50 km | 50,00 | ×2 |
| ✓ 9 | 19/11/2016 | 1st Fragrant Mountain Trail | 50,00 | ×2 |
| ✓ 10 | 6/11/2016 | 2nd Wuyishan Trail Race 50 km | 50,00 | ×2 |
| ✓ 11 | 4/10/2016 | 1st Dunhuang Yadan Marathon | 50,00 | ×2 |
| ✓ 12 | 14/8/2016 | 2nd Chongli 100 Ultra Sky Trail Challenge - 50 km Run | 50,00 | ×2 |
| ✓ 13 | 16/8/2015 | 1st Chongli 100 Ultra Sky Trail Challenge | 50,00 | ×2 |
| ✓ 14 | 9/5/2015 | 7th The North Face 50 China | 50,00 | ×2 |
| ✓ 15 | 21/8/2016 | 1st Baturu Trail Songhua Lake 50K | 48,00 | ×1 |
| ✓ 16 | 2/5/2017 | 1st Yading Kora Ultra | 46,00 | ×1 |