Ming-Tien (鄭明典) Cheng
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12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
23
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
1
Countries visited ?
Taiwan
71,7%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 3 258; Σ finishers = 4 542. 3 258 / 4 542 × 100 = 71.73%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races645 km
Longest race71,3 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
12 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 24/3/2013 | 3rd National Taipei University 12H Ultra Marathon | 71,30 | ×3 |
| ✓ 2 | 24/9/2016 | 7th Run Around Taipei 60 km | 60,00 | ×2 |
| ✓ 3 | 24/12/2016 | 2nd Payen settlement Ultramarathon | 56,80 | ×2 |
| ✓ 4 | 23/2/2014 | 2nd Zhenxibao (Cinsbu) 54 km Ultramarathon | 54,00 | ×2 |
| ✓ 5 | 5/5/2012 | 1st Bei-yi Freeway Ultra Marathon | 53,50 | ×2 |
| ✓ 6 | 2/1/2015 | 1st Muzha Fulong Ultramarathon | 52,00 | ×2 |
| ✓ 7 | 30/11/2013 | 2nd Yilan Dongshan River 50km Ultra-Marathon | 50,00 | ×2 |
| ✓ 8 | 25/8/2013 | 1st Shiding 50km Ultramarathon | 50,00 | ×2 |
| ✓ 9 | 14/4/2013 | 1st Zhenxibao (Cinsbu) 50 km Ultramarathon | 50,00 | ×2 |
| ✓ 10 | 18/11/2012 | 1st Yilan Dongshan River 50km Ultra-Marathon | 50,00 | ×2 |
| ✓ 11 | 10/10/2012 | 2nd Flex Power National 50K Track Taipei | 50,00 | ×2 |
| ✓ 12 | 21/10/2012 | 1st Jhen-wu-shan UltraMaraton | 47,00 | ×2 |