Kazuhiro (奥野和宏) Okuno
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Ultrarunner since 2022
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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
Japan50,5%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 514; Σ finishers = 2 996. 1 514 / 2 996 × 100 = 50.53%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races884 km
Longest race100,0 km
6th Mine Akiyoshidai Geopark Ultra Marathon — 5/10/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road88,7%
Stage11,3%
Records
HISTORY
10 race(s) · 2 stage(s) nested| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 04.04 | 50km | 5th Ultra Udon Maranic |
8:37:13 h | 92 |
| 2025 | ||||
| 05.10 | 100km | 6th Mine Akiyoshidai Geopark Ultra Marathon |
13:50:31 h | 86 |
| 05–06.04 | 100km/2stages | 4th Ultra Udon Maranic |
13:22:50 h | 28 |
| 05.04 | 50km | 4th Ultra Udon Maranic stage 1 - 50km | 6:29:10 h | 18 |
| 06.04 | 50km | 4th Ultra Udon Maranic stage 2 - 50km | 6:53:40 h | 37 |
| 2024 | ||||
| 20.10 | 100km | 30th River Shimanto 100km |
12:42:41 h | 632 |
| 09.06 | 84.39km | 8th JAL Mukatsuku Double Marathon |
10:50:32 h | 186 |
| 05.04 | 50km | 3rd Ultra Udon Maranic |
7:02:32 h | 27 |
| 2023 | ||||
| 21.10 | 100km | 6th Iki 100 km Ultra Marathon |
12:27:00 h | 169 |
| 23.04 | 100km | 2nd Suo-Oshima Ultra Marathon - 100 km |
12:40:53 h | 73 |
| 2022 | ||||
| 15.10 | 100km | 5th Iki 100 km Ultra Marathon |
13:04:46 h | 117 |
| 22.05 | 100km | 1st Suo-Oshima Ultra Marathon - 100 km |
14:36:03 h | 114 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 5/10/2025 | 6th Mine Akiyoshidai Geopark Ultra Marathon | 100,00 | ×3 |
| ✓ 2 | 5/4/2025 | 4th Ultra Udon Maranic | 100,00 | ×3 |
| ✓ 3 | 20/10/2024 | 30th River Shimanto 100km | 100,00 | ×3 |
| ✓ 4 | 21/10/2023 | 6th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 5 | 23/4/2023 | 2nd Suo-Oshima Ultra Marathon - 100 km | 100,00 | ×3 |
| ✓ 6 | 15/10/2022 | 5th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 7 | 22/5/2022 | 1st Suo-Oshima Ultra Marathon - 100 km | 100,00 | ×3 |
| ✓ 8 | 9/6/2024 | 8th JAL Mukatsuku Double Marathon | 84,39 | ×3 |
| ✓ 9 | 4/4/2026 | 5th Ultra Udon Maranic | 50,00 | ×1 |
| ✓ 10 | 5/4/2024 | 3rd Ultra Udon Maranic | 50,00 | ×1 |