Hiroyuki (古澤寛之) Furusawa
Born : 1965 Cat. M60 Ultrarunner since 2007 JPN
22
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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
65,2%
Rank quotient ?This runner's calculation uses 22 eligible race(s): Σ(rank − 1) = 12 212; Σ finishers = 18 740. 12 212 / 18 740 × 100 = 65.17%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed22
Km — ultra races1 979 km
> 100 km1
Longest race102,0 km

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road53,7%
Trail46,3%