Chih-Jung (張志榮) Chang
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Born : 1971
Cat. M55 Ultrarunner since 2012
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
Taiwan25,4%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 840; Σ finishers = 3 310. 840 / 3 310 × 100 = 25.38%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races486 km
Longest race100,0 km
7th Zhenxibao (Cinsbu) 100 km Ultramarathon — 20/1/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road89,7%
Trail10,3%
HISTORY
8 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 20/1/2019 | 7th Zhenxibao (Cinsbu) 100 km Ultramarathon | 100,00 | ×5 |
| ✓ 2 | 8/1/2017 | 5th Zhenxibao (Cinsbu) 80 km Ultramarathon | 80,00 | ×4 |
| ✓ 3 | 12/8/2012 | Bei-tou Long-fong-gu 7 Hrs Ultra-marathon | 56,70 | ×2 |
| ✓ 4 | 5/2/2019 | 12th Tainan Branch Friendship Cup Chinese New Year Marathon | 54,40 | ×2 |
| ✓ 5 | 28/1/2017 | 10th Tainan Branch Friendship Cup Chinese New Year Marathon | 51,80 | ×2 |
| ✓ 6 | 10/3/2012 | 2nd Southern Cross-Island Highway 50 km Ultra Marathon | 50,00 | ×2 |
| ✓ 7 | 30/12/2018 | 1st Paolai Shancheng Ultramarathon | 47,00 | ×2 |
| ✓ 8 | 10/12/2017 | 1st Chia Nan Group Marathon | 45,80 | ×2 |