Ryosaku (中井良作) Nakai
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Born : 1972
Cat. M50 Ultrarunner since 2012
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
41
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
Japan52,9%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 8 451; Σ finishers = 15 961. 8 451 / 15 961 × 100 = 52.95%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed28
Km — ultra races2 243 km
> 100 km5
> 160 km3
Longest race169,0 km
4th Lake Biwa 100 — 11/10/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road15,7%
Trail84,3%
HISTORY
28 race(s)| Runner | Races in common |
|---|---|