Tsutomu (石橋勉) Ishibashi
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Born : 1940
Cat. M85 Ultrarunner since 1999
45
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
52
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
2
Countries visited ?Japan
South Korea
JapanSouth Korea69,3%
Rank quotient ?This runner's calculation uses 45 eligible race(s): Σ(rank − 1) = 14 331; Σ finishers = 20 692. 14 331 / 20 692 × 100 = 69.26%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed48
Km — ultra races4 341 km
> 100 km8
> 160 km5
> 200 km4
Longest race250,0 km
16. Yamaguchi 100 Hagi-O-Kan Maranic 250 km — 2/5/2004
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road81,7%
Trail9,2%
Stage9,1%
Records
HISTORY
45 race(s)| Runner | Races in common |
|---|---|