Kazuyuki (関口一幸) Sekiguchi
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Born : 1961
Cat. M65 Ultrarunner since 2017
21
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
36
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
Japan50,1%
Rank quotient ?This runner's calculation uses 21 eligible race(s): Σ(rank − 1) = 5 376; Σ finishers = 10 740. 5 376 / 10 740 × 100 = 50.06%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed21
Km — ultra races1 740 km
> 100 km4
> 160 km2
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)
Road5,7%
Trail87,1%
Ult.Walk7,2%
Records
HISTORY
21 race(s)| Runner | Races in common |
|---|---|