Kazumi (青木和巳) Aoki
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Born : 1965
Cat. M60 Ultrarunner since 2012
12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
32
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
Japan86,0%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 7 352; Σ finishers = 8 548. 7 352 / 8 548 × 100 = 86.01%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races1 169 km
> 100 km5
Longest race125,0 km
10th Fujisan Issyu Walking — 6/6/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road27,4%
Trail25,4%
Ult.Walk47,2%
Records
HISTORY
12 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 06.06 | 125km | 10th Fujisan Issyu Walking |
29:43:43 h | 330 |
| 2025 | ||||
| 23.08 | 100km | 1st Summer Karuizawa and Joshu Nakasendo Ultra Walking |
31:26:04 h | 173 |
| 07.06 | 125km | 9th Fujisan Issyu Walking |
29:24:03 h | 262 |
| 22.03 | 100km | 1st Tokyo Story Ultra Walking |
24:24:56 h | 136 |
| 2024 | ||||
| 13.07 | 105km | 4th Nihondaira and Suruganokuni Ultra Run |
28:52:58 h | 74 |
| 27.04 | 102km | 3rd Miura-Halbinsel-Tour Ultra Walking |
22:38:50 h | 109 |
| 2023 | ||||
| 18.03 | 115km | 6th Lake Kasumigaura Ultra Run |
27:36:40 h | 69 |
| 2016 | ||||
| 09.10 | 71.5km | 24th Hasetsune Cup - Japan Mountain Endurance Race |
23:35:47 h | 1911 |
| 2014 | ||||
| 12.10 | 71.5km | 22nd Hasetsune Cup - Japan Mountain Endurance Race |
22:41:41 h | 1879 |
| 2013 | ||||
| 10.03 | 72km | 1st Izu Trail Journey |
13:15:55 h | 968 |
| 2012 | ||||
| 19.05 | 82km | 1st Shizuoka to Yamanashi |
23:39:56 h | 833 |
| 22.04 | 100km | 22nd Fuji 5 Lakes 100 km Challenge |
12:54:28 h | 620 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 6/6/2026 | 10th Fujisan Issyu Walking | 125,00 | ×3 |
| ✓ 2 | 7/6/2025 | 9th Fujisan Issyu Walking | 125,00 | ×3 |
| ✓ 3 | 18/3/2023 | 6th Lake Kasumigaura Ultra Run | 115,00 | ×3 |
| ✓ 4 | 13/7/2024 | 4th Nihondaira and Suruganokuni Ultra Run | 105,00 | ×3 |
| ✓ 5 | 27/4/2024 | 3rd Miura-Halbinsel-Tour Ultra Walking | 102,00 | ×3 |
| ✓ 6 | 23/8/2025 | 1st Summer Karuizawa and Joshu Nakasendo Ultra Walking | 100,00 | ×3 |
| ✓ 7 | 22/3/2025 | 1st Tokyo Story Ultra Walking | 100,00 | ×3 |
| ✓ 8 | 22/4/2012 | 22nd Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 9 | 19/5/2012 | 1st Shizuoka to Yamanashi (STY) | 82,00 | ×2 |
| ✓ 10 | 10/3/2013 | 1st Izu Trail Journey | 72,00 | ×2 |
| ✓ 11 | 9/10/2016 | 24th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 12 | 12/10/2014 | 22nd Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |