Masaki (三田真樹) Sanda
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Ultrarunner since 2024
2
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
15
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
Japan90,3%
Rank quotient ?This runner's calculation uses 2 eligible race(s): Σ(rank − 1) = 390; Σ finishers = 432. 390 / 432 × 100 = 90.28%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed2
Km — ultra races230 km
> 100 km2
Longest race125,0 km
9th Fujisan Issyu Walking — 7/6/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road45,7%
Ult.Walk54,3%
Records
No record for a classic ultra format
HISTORY
2 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 07.06 | 125km | 9th Fujisan Issyu Walking |
30:45:21 h | 313 |
| 2024 | ||||
| 13.07 | 105km | 4th Nihondaira and Suruganokuni Ultra Run |
29:02:42 h | 79 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 7/6/2025 | 9th Fujisan Issyu Walking | 125,00 | ×8 |
| ✓ 2 | 13/7/2024 | 4th Nihondaira and Suruganokuni Ultra Run | 105,00 | ×7 |