Ryo (早川亮) Hayakawa
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Born : 1971
Cat. M55 Ultrarunner since 2012
27
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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
Japan73,7%
Rank quotient ?This runner's calculation uses 27 eligible race(s): Σ(rank − 1) = 11 214; Σ finishers = 15 208. 11 214 / 15 208 × 100 = 73.74%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed27
Km — ultra races2 119 km
Longest race100,0 km
23th Tango 100 km Ultramarathon — 14/9/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
27 race(s)| Runner | Races in common |
|---|---|