Takashi (秋成孝) Akinari
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10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
27
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
59,3%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 676; Σ finishers = 2 825. 1 676 / 2 825 × 100 = 59.33%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races857 km
> 100 km2
Longest race112,0 km
23th Mt. Rocco Cannonball Run - 112 km Power — 17/10/2020
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road56,9%
Trail43,1%
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 02.08 | 110km | 28:45:49 h | 13 | |
| 2024 | ||||
| 10.08 | 90km | 22:33:42 h | 11 | |
| 2021 | ||||
| 13.11 | 61.3km | 9:36:43 h | 18 | |
| 2020 | ||||
| 17.10 | 112km | 19:58:22 h | 56 | |
| 2019 | ||||
| 20.10 | 57.8km | 10:51:50 h | 65 | |
| 21.04 | 100km | 11:16:51 h | 89 | |
| 2016 | ||||
| 28.05 | 50km | 10:20:31 h | 746 | |
| 27.03 | 100km | 11:26:22 h | 98 | |
| 2015 | ||||
| 29.03 | 100km | 12:28:48 h | 326 | |
| 2013 | ||||
| 19.05 | 76km | 10:52:57 h | 264 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/10/2020 | 23th Mt. Rocco Cannonball Run - 112 km Power | 112,00 | ×4 |
| ✓ 2 | 2/8/2025 | 6th Osaka Natsunojin Kurondo Rondo - 110 km | 110,00 | ×4 |
| ✓ 3 | 21/4/2019 | 11th 100 km Ultra Maranic Osaka | 100,00 | ×3 |
| ✓ 4 | 27/3/2016 | 2nd Osaka Yodogawa 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 5 | 29/3/2015 | 1st Osaka Yodogawa 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 6 | 10/8/2024 | 5th Osaka Natsunojin Kurondo Rondo - 90 km | 90,00 | ×3 |
| ✓ 7 | 19/5/2013 | Saba Highway Ultramarathon | 76,00 | ×2 |
| ✓ 8 | 13/11/2021 | 2nd Osaka Natsunojin Kurondo Rondo - 60 km | 61,30 | ×2 |
| ✓ 9 | 20/10/2019 | 3rd Kohechi Trail Journey | 57,80 | ×2 |
| ✓ 10 | 28/5/2016 | 2nd Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |