Chun-Yao (張鈞堯) Chang
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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.
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
1
Countries visited ?
Taiwan
41,8%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 2 627; Σ finishers = 6 287. 2 627 / 6 287 × 100 = 41.78%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races941 km
Longest race100,0 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road89,6%
Stage10,4%
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/3/2014 | 4th Southern Cross-Island Highway 100 km Ultra Marathon | 100,00 | ×4 |
| ✓ 2 | 13/9/2014 | 2nd Kaohsiung 12h Track UltraMarathon | 82,23 | ×3 |
| ✓ 3 | 22/12/2013 | 1st Shei-Pa ultramarathon | 58,00 | ×2 |
| ✓ 4 | 16/2/2018 | 11th Tainan Branch Friendship Cup Chinese New Year Marathon | 55,00 | ×2 |
| ✓ 5 | 5/2/2019 | 12th Tainan Branch Friendship Cup Chinese New Year Marathon | 54,40 | ×2 |
| ✓ 6 | 31/1/2014 | 7th Tainan Branch Friendship Cup Chinese New Year Marathon | 54,00 | ×2 |
| ✓ 7 | 12/10/2013 | 2nd Jhen-wu-shan UltraMaraton | 53,00 | ×2 |
| ✓ 8 | 26/1/2014 | 1st Yizai Jincheng 6h Ultramarathon | 51,94 | ×2 |
| ✓ 9 | 18/8/2013 | 2nd Taitung Liji badland 50km Ultra Marathon | 50,00 | ×2 |
| ✓ 10 | 14/4/2013 | 1st Zhenxibao (Cinsbu) 50 km Ultramarathon | 50,00 | ×2 |
| ✓ 11 | 18/11/2012 | 1st Yilan Dongshan River 50km Ultra-Marathon | 50,00 | ×2 |
| ✓ 12 | 9/10/2015 | 1st Jhushan Ultramarathon | 48,00 | ×1 |
| ✓ 13 | 10/2/2013 | 6th Tainan Branch Friendship Cup Chinese New Year Marathon | 46,90 | ×1 |
| ✓ 14 | 21/6/2015 | 1st Zhongliao Mountain Ultramarathon | 45,00 | ×1 |
| ✓ 15 | 2/11/2013 | 2nd Datun Mountain Ultra Marathon | 45,00 | ×1 |