Kazuo (宇佐美和男) Usami
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Born : 1968
Cat. M55 Ultrarunner since 2017
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
41
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
Japan65,0%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 7 503; Σ finishers = 11 549. 7 503 / 11 549 × 100 = 64.97%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed28
Km — ultra races2 226 km
> 100 km7
> 160 km2
Longest race167,0 km
9th Ultra-Trail Mt. Fuji (UTMF) — 26/4/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road11,8%
Trail88,2%
HISTORY
28 race(s)| Runner | Races in common |
|---|---|