Akira (西井彰) Nishii
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Ultrarunner since 2016
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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
Japan71,2%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 4 243; Σ finishers = 5 961. 4 243 / 5 961 × 100 = 71.18%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races946 km
Longest race56,0 km
33th Mt. Rocco Cannonball Run - 56 km Speed — 18/10/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road47,4%
Trail52,6%
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|