Shigeru (益子茂) Mashiko
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Born : 1976
Cat. M50 Ultrarunner since 2015
24
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
Japan16,9%
Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 2 243; Σ finishers = 13 306. 2 243 / 13 306 × 100 = 16.86%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed24
Km — ultra races1 781 km
Longest race100,0 km
8th Ibaraki 100k Ultra Marathon — 8/3/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road58,1%
Trail41,9%
Records
HISTORY
24 race(s)| Runner | Races in common |
|---|---|