Hiromi (臼山博美) Usuyama
Born : 1980 Cat. W45 Ultrarunner since 2014 JPN
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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 ?JPNJapan
42,9%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 4 340; Σ finishers = 10 114. 4 340 / 10 114 × 100 = 42.91%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed23
Km — ultra races1 894 km
> 100 km3
> 160 km3
Longest race169,0 km
4th Lake Biwa 100 — 11/10/2024

Km per year (ultra races)

355
4 races
2022
123
2 races
2023
414
4 races
2024
442
4 races
2025
2026

Race types (share of distance)

Road19,5%
Trail80,5%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F1
🏅 Top 30
🏅 Top 3 F3
Longest winning streak0
Current streak0