Kazuya (古川一哉) Furukawa
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Born : 1969
Cat. M55 Ultrarunner since 2008
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
35
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
Japan12,0%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 995; Σ finishers = 8 273. 995 / 8 273 × 100 = 12.03%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed20
Km — ultra races1 668 km
Longest race100,0 km
4th Iki 100 km Ultra Marathon — 19/10/2019
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road62,2%
Trail37,8%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
20 race(s)| Runner | Races in common |
|---|---|