Katsumi (畑中克美) Hatakenaka
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Ultrarunner since 2024
4
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
17
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
Japan69,9%
Rank quotient ?This runner's calculation uses 4 eligible race(s): Σ(rank − 1) = 1 721; Σ finishers = 2 461. 1 721 / 2 461 × 100 = 69.93%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed4
Km — ultra races350 km
Longest race100,0 km
32th Yatsugatake Nobeyama 100 km — 17/5/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
4 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 17.05 | 100km | 32th Yatsugatake Nobeyama 100 km |
13:54:08 h | 1216 |
| 19.04 | 80km | 36th Fuji 4 Lakes 80 km Challenge |
9:53:08 h | 76 |
| 2025 | ||||
| 19.10 | 70km | 32. Ultramarathon Okumusashi |
9:02:05 h | 269 |
| 2024 | ||||
| 29.09 | 100km | 2nd Mount Akagi 100 Ultra Marathon |
15:48:48 h | 164 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/5/2026 | 32th Yatsugatake Nobeyama 100 km | 100,00 | ×5 |
| ✓ 2 | 29/9/2024 | 2nd Mount Akagi 100 Ultra Marathon | 100,00 | ×5 |
| ✓ 3 | 19/4/2026 | 36th Fuji 4 Lakes 80 km Challenge | 80,00 | ×4 |
| ✓ 4 | 19/10/2025 | 32. Ultramarathon Okumusashi | 70,00 | ×4 |