Hiroyuki (佐々木宏之) Sasaki
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Born : 1968
Cat. M55 Ultrarunner since 2014
34
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
Japan54,0%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 10 353; Σ finishers = 19 182. 10 353 / 19 182 × 100 = 53.97%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed34
Km — ultra races2 924 km
> 100 km7
> 160 km4
Longest race167,0 km
11th Ultra-Trail Mt. Fuji (UTMF) — 24/4/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road22,6%
Trail77,4%
Records
HISTORY
34 race(s)| Runner | Races in common |
|---|---|