Hideyuki (石丸英之) Ishimaru
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Born : 1976
Cat. M50 Ultrarunner since 2014
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
56
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
Japan63,7%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 5 091; Σ finishers = 7 996. 5 091 / 7 996 × 100 = 63.67%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed28
Km — ultra races4 164 km
> 100 km16
> 160 km6
> 200 km4
> 24h3
Longest race516,0 km
21st River Road Foot Race 516 km — 30/4/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road70,2%
Trail29,8%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
28 race(s)| Runner | Races in common |
|---|---|