Masafumi (西川正文) Nishikawa
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Born : 1971
Cat. M55 Ultrarunner since 2014
49
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
53
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
2
Countries visited ?
Hong KongJapan
Hong KongJapan41,7%
Rank quotient ?This runner's calculation uses 49 eligible race(s): Σ(rank − 1) = 7 191; Σ finishers = 17 252. 7 191 / 17 252 × 100 = 41.68%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed49
Km — ultra races4 426 km
> 100 km10
> 160 km1
> 24h3
Longest race162,0 km
3rd Ultra-Trail Tai Mo Shan (UTMT) 100 Mile — 30/12/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road72,0%
Trail28,0%
HISTORY
49 race(s)| Runner | Races in common |
|---|---|