Chi-Chuan (張啟川) Chang
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Born : 1953
Cat. M70 Ultrarunner since 2003
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
18
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
Taiwan34,9%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 363; Σ finishers = 1 041. 363 / 1 041 × 100 = 34.87%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races424 km
Longest race65,5 km
6th National Taipei University 8H Ultra Marathon — 19/3/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
8 race(s) · 2 split(s) nested| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 19/3/2017 | 6th National Taipei University 8H Ultra Marathon | 65,52 | ×3 |
| ✓ 2 | 15/2/2015 | 4th Taipei 6hr Ultra Marathon Sunday Run | 55,44 | ×3 |
| ✓ 3 | 31/1/2016 | 5th Taipei 6hr Ultra Marathon Sunday Run | 52,70 | ×2 |
| ✓ 4 | 20/10/2019 | 9th Flex Power National 50K Track Taipei | 50,00 | ×2 |
| ✓ 5 | 10/10/2014 | 4th Flex Power National 50K Track Taipei | 50,00 | ×2 |
| ✓ 6 | 17/11/2013 | 3rd Flex Power National 50K Track Taipei | 50,00 | ×2 |
| ✓ 7 | 10/10/2012 | 2nd Flex Power National 50K Track Taipei | 50,00 | ×2 |
| ✓ 8 | 18/1/2003 | Taiwan 50K Championships | 50,00 | ×2 |