Masakazu (相澤正和) Aizawa
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Born : 1972
Cat. M50 Ultrarunner since 2012
42
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
57
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
4
Countries visited ?
France
ItalyJapan
Taiwan
FranceItalyJapanTaiwan42,7%
Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 15 932; Σ finishers = 37 314. 15 932 / 37 314 × 100 = 42.70%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed42
Km — ultra races4 539 km
> 100 km17
> 160 km8
Longest race200,0 km
15th Little Edo Oedo 200k — 15/3/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road24,1%
Trail75,9%
HISTORY
42 race(s)| Runner | Races in common |
|---|---|