Masatoshi (島崎昌敏) Shimazaki
Born : 1980 Cat. M45 Ultrarunner since 2011 JPN
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
39
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
14,2%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 3 053; Σ finishers = 21 430. 3 053 / 21 430 × 100 = 14.25%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20
Km — ultra races1 908 km
> 100 km4
> 160 km3
Longest race169,0 km
2nd Lake Biwa 100 — 7/10/2022

Km per year (ultra races)

445
3 races
2022
247
2 races
2023
250
3 races
2024
2025
70
1 race
2026

Race types (share of distance)

Road21,0%
Trail79,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0