Tsutomu (佐藤力) Sato
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Born : 1981
Cat. M45 Ultrarunner since 2022
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
19
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
Japan45,0%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 620; Σ finishers = 1 377. 620 / 1 377 × 100 = 45.03%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races403 km
> 100 km1
Longest race101,0 km
4th Kumagawa Revival Trail — 15/11/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 15.11 | 101km | 4th Kumagawa Revival Trail |
19:54:36 h | 34 |
| 20.07 | 66km | 13th Kirishima Ebino-kougen Extreme Trail |
10:20:56 h | 67 |
| 2024 | ||||
| 15.12 | 50km | 9th Minami-aso caldera Trail |
9:00:21 h | 97 |
| 2023 | ||||
| 23.07 | 66km | 11th Kirishima Ebino-kougen Extreme Trail |
11:02:38 h | 151 |
| 28.05 | 60km | 8th Akiyoshidai Karst Trail Run |
7:30:22 h | 38 |
| 2022 | ||||
| 24.07 | 60km | 10th Kirishima Ebino-kougen Extreme Trail |
12:32:33 h | 239 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/11/2025 | 4th Kumagawa Revival Trail | 101,00 | ×5 |
| ✓ 2 | 20/7/2025 | 13th Kirishima Ebino-kougen Extreme Trail | 66,00 | ×3 |
| ✓ 3 | 23/7/2023 | 11th Kirishima Ebino-kougen Extreme Trail | 66,00 | ×3 |
| ✓ 4 | 28/5/2023 | 8th Akiyoshidai Karst Trail Run | 60,00 | ×3 |
| ✓ 5 | 24/7/2022 | 10th Kirishima Ebino-kougen Extreme Trail | 60,00 | ×3 |
| ✓ 6 | 15/12/2024 | 9th Minami-aso caldera Trail | 50,00 | ×2 |