Satoshi (中澤聡) Nakazawa
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14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
53,8%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 3 121; Σ finishers = 5 796. 3 121 / 5 796 × 100 = 53.85%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 353 km
> 100 km5
> 160 km2
> 200 km1
Longest race225,0 km
14th Gunma 100km Walk — 10/5/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road31,4%
Trail68,6%
Records
HISTORY
14 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 10/5/2025 | 14th Gunma 100km Walk | 225,00 | ×6 |
| ✓ 2 | 26/4/2024 | 9th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×5 |
| ✓ 3 | 23/9/2023 | 9th SkyViewTrail Memorial Cup | 128,00 | ×3 |
| ✓ 4 | 20/6/2026 | 2nd Kaga Spa by UTMB - Kaga Spa Trail Endurance100 | 105,00 | ×3 |
| ✓ 5 | 11/6/2022 | 2nd Okushinano 100 | 100,80 | ×3 |
| ✓ 6 | 16/5/2026 | 11th Trainic World 100 km in Sai-No-Kuni | 100,00 | ×3 |
| ✓ 7 | 29/9/2024 | 2nd Mount Akagi 100 Ultra Marathon | 100,00 | ×3 |
| ✓ 8 | 13/3/2022 | 4th Ibaraki 100k Ultra Marathon | 100,00 | ×3 |
| ✓ 9 | 21/9/2019 | 6th SkyView Ultra-Trail 70 - Yamada Noboru Memorial Cup | 75,00 | ×2 |
| ✓ 10 | 18/10/2020 | 7th Shigakogen Extreme Trail | 54,00 | ×1 |
| ✓ 11 | 5/10/2025 | 13th Trainic world Ogose-Tokigawa Trail Run 50km | 51,40 | ×1 |
| ✓ 12 | 3/12/2023 | 11th Trainic world Ogose-Tokigawa Trail Run 50km | 51,40 | ×1 |
| ✓ 13 | 1/12/2024 | 11th Trainic world Soto-Chichibu Trail Run 50km | 50,00 | ×1 |
| ✓ 14 | 6/5/2023 | 2nd Karuizawa Trail Running Race | 45,00 | ×1 |