Masato (石川雅人) Ishikawa
ID 883148
Born : 1973 Cat. M50 Ultrarunner since 2016 JPN
13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
24
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 ?JPNJapan
21,1%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 982; Σ finishers = 4 659. 982 / 4 659 × 100 = 21.08%. A win adds 0 to the numerator. Lower is better.