Tsukasa (川原井司) Kawarai
External sources
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Born : 1966
Cat. M60 Ultrarunner since 2010
39
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
48
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
United States
JapanUnited States21,4%
Rank quotient ?This runner's calculation uses 39 eligible race(s): Σ(rank − 1) = 3 960; Σ finishers = 18 510. 3 960 / 18 510 × 100 = 21.39%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed39
Km — ultra races2 745 km
> 100 km3
> 160 km1
Longest race170,0 km
5th Ultra-Trail Mt. Fuji (UTMF) — 27/4/2018
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road18,4%
Trail81,6%
Records
HISTORY
39 race(s)| Runner | Races in common |
|---|---|