Yoshinori (井ヶ瀬良則) Igase
Born : 1961 Cat. M65 Ultrarunner since 2015 JPN
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
37
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
84,9%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 9 774; Σ finishers = 11 515. 9 774 / 11 515 × 100 = 84.88%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20
Km — ultra races1 879 km
> 100 km5
> 160 km2
> 24h2
Longest race173,0 km

Km per year (ultra races)

273
2 races
2022
100
1 race
2023
2024
173
1 race
2025
2026

Race types (share of distance)

Road96,3%
Trail3,7%