Seiichiro (水上清一郎) Mizukami
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Born : 1969
Cat. M55 Ultrarunner since 2013
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
52
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
Japan46,5%
Rank quotient ?This runner's calculation uses 33 eligible race(s): Σ(rank − 1) = 10 820; Σ finishers = 23 292. 10 820 / 23 292 × 100 = 46.45%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed34
Km — ultra races3 560 km
> 100 km16
> 160 km5
Longest race200,0 km
16th Little Edo Oedo 200k — 14/3/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road33,3%
Trail62,9%
Stage3,8%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
33 race(s) · 2 stage(s) nested| Runner | Races in common |
|---|---|