Yasuko (小坂泰子) Kosaka
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Born : 1978
Cat. W45 Ultrarunner since 2013
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
48
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 ?Japan
Japan44,0%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 5 124; Σ finishers = 11 649. 5 124 / 11 649 × 100 = 43.99%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed25
Km — ultra races2 531 km
> 100 km7
> 160 km4
Longest race200,0 km
16th Little Edo Oedo 200k — 14/3/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road53,3%
Trail46,7%
HISTORY
25 race(s)| Runner | Races in common |
|---|---|