Takashi (野中隆士) Nonaka
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Ultrarunner since 2013
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
21
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
Japan75,6%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 2 640; Σ finishers = 3 493. 2 640 / 3 493 × 100 = 75.58%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races517 km
Longest race100,0 km
27th Fuji 5 Lakes 100 km Challenge — 23/4/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road86,3%
Trail13,7%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 19.10 | 70km | 32. Ultramarathon Okumusashi |
10:19:43 h | 432 |
| 18.05 | 68km | 31th Yatsugatake Nobeyama 68 km |
9:27:17 h | 162 |
| 2023 | ||||
| 04.06 | 78km | 30. Ultramarathon Okumusashi |
11:10:14 h | 684 |
| 2022 | ||||
| 03.07 | 8h | 28th 8-Hour Endurance Race Tokorozawa |
58.800 km | 123 |
| 2019 | ||||
| 19.05 | 71km | 25th Yatsugatake Nobeyama 71 km |
9:57:44 h | 144 |
| 2017 | ||||
| 23.04 | 100km | 27th Fuji 5 Lakes 100 km Challenge |
13:13:43 h | 913 |
| 2013 | ||||
| 19.05 | 71km | 19th Yatsugatake Nobeyama 71 km |
9:59:02 h | 189 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 23/4/2017 | 27th Fuji 5 Lakes 100 km Challenge | 100,00 | ×4 |
| ✓ 2 | 4/6/2023 | 30. Ultramarathon Okumusashi | 78,00 | ×3 |
| ✓ 3 | 19/5/2019 | 25th Yatsugatake Nobeyama 71 km | 71,00 | ×3 |
| ✓ 4 | 19/5/2013 | 19th Yatsugatake Nobeyama 71 km | 71,00 | ×3 |
| ✓ 5 | 19/10/2025 | 32. Ultramarathon Okumusashi | 70,00 | ×3 |
| ✓ 6 | 18/5/2025 | 31th Yatsugatake Nobeyama 68 km | 68,00 | ×3 |
| ✓ 7 | 3/7/2022 | 28th 8-Hour Endurance Race Tokorozawa | 58,80 | ×2 |