Jung-Tsan (張榮燦) Chang
External sources
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Born : 1966
Cat. M60 Ultrarunner since 2016
21
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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 ?
JapanTaiwan
JapanTaiwan41,2%
Rank quotient ?This runner's calculation uses 21 eligible race(s): Σ(rank − 1) = 2 191; Σ finishers = 5 319. 2 191 / 5 319 × 100 = 41.19%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed21
Km — ultra races1 523 km
Longest race100,0 km
35th Fuji 4 Lakes 100 km Challenge — 20/4/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road93,0%
Trail7,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M3
Longest winning streak0
Current streak0
HISTORY
21 race(s)| Runner | Races in common |
|---|---|