Hirokazu (水野弘一) Mizuno
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Born : 1978
Cat. M45 Ultrarunner since 2023
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
Japan76,8%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 5 657; Σ finishers = 7 369. 5 657 / 7 369 × 100 = 76.77%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 119 km
> 100 km1
Longest race100,8 km
4th Okushinano 100 — 8/6/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road26,8%
Trail73,2%
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 14.06 | 100km | 14th Hida Takayama 100 km Ultramarathon |
13:53:37 h | 1556 |
| 31.05 | 100km | 1st Nara Ultra Marathon |
13:39:52 h | 1448 |
| 17.05 | 100km | 32th Yatsugatake Nobeyama 100 km |
13:56:51 h | 1286 |
| 2025 | ||||
| 02.11 | 79km | 3rd Salt Road Trail |
10:21:35 h | 61 |
| 20.09 | 80km | 11th SkyViewTrail Memorial Cup |
15:32:53 h | 95 |
| 07.09 | 50km | 14th Hakuba Int. Trail Run |
9:30:19 h | 219 |
| 05.07 | 90km | 4th Central Alps Skyline Japan |
21:49:09 h | 107 |
| 03.05 | 12h | 5th Yarikan 12h |
78.300 km | 36 |
| 2024 | ||||
| 29.06 | 90km | 3rd Central Alps Skyline Japan |
20:03:45 h | 84 |
| 08.06 | 100.8km | 4th Okushinano 100 |
18:57:06 h | 381 |
| 2023 | ||||
| 26.11 | 52km | 9th Kumano Old Trails |
8:27:10 h | 56 |
| 04.11 | 48km | 5th Ninja Trail Run |
9:14:06 h | 179 |
| 22.10 | 51km | 1st Great Ryozen Mountain |
8:46:55 h | 110 |
| 04.03 | 100km | 1st Minonokuni Yamajiro Trail 100 |
29:46:00 h | 53 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/6/2024 | 4th Okushinano 100 | 100,80 | ×3 |
| ✓ 2 | 14/6/2026 | 14th Hida Takayama 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 31/5/2026 | 1st Nara Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 17/5/2026 | 32th Yatsugatake Nobeyama 100 km | 100,00 | ×3 |
| ✓ 5 | 4/3/2023 | 1st Minonokuni Yamajiro Trail 100 | 100,00 | ×3 |
| ✓ 6 | 5/7/2025 | 4th Central Alps Skyline Japan | 90,00 | ×3 |
| ✓ 7 | 29/6/2024 | 3rd Central Alps Skyline Japan | 90,00 | ×3 |
| ✓ 8 | 20/9/2025 | 11th SkyViewTrail Memorial Cup | 80,00 | ×2 |
| ✓ 9 | 2/11/2025 | 3rd Salt Road Trail | 79,00 | ×2 |
| ✓ 10 | 3/5/2025 | 5th Yarikan 12h | 78,30 | ×2 |
| ✓ 11 | 26/11/2023 | 9th Kumano Old Trails | 52,00 | ×1 |
| ✓ 12 | 22/10/2023 | 1st Great Ryozen Mountain | 51,00 | ×1 |
| ✓ 13 | 7/9/2025 | 14th Hakuba Int. Trail Run | 50,00 | ×1 |
| ✓ 14 | 4/11/2023 | 5th Ninja Trail Run | 48,00 | ×1 |