Yuji (坂本裕二) Sakamoto
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Born : 1979
Cat. M45 Ultrarunner since 2017
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
Japan3,5%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 154; Σ finishers = 4 380. 154 / 4 380 × 100 = 3.52%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races694 km
Longest race100,0 km
32th Fuji 5 Lakes 100 km Challenge — 17/4/2022
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 08.06 | 50km | 19th Iwate Ginga 50km Marathon Challenge |
3:35:48 h | 7 |
| 2024 | ||||
| 09.06 | 50km | 18th Iwate Ginga 50km Marathon Challenge |
3:29:38 h | 5 |
| 14.01 | 5h | 11th Iikoto Challenge - 5h |
65.672 km | 4 |
| 2023 | ||||
| 11.11 | 78km | 10th Michikusa-Ultra, Minamiizu 78 km |
11:05:45 h | 79 |
| 11.06 | 50km | 17th Iwate Ginga 50km Marathon Challenge |
3:37:49 h | 4 |
| 2022 | ||||
| 12.06 | 50km | 16th Iwate Ginga 50km Marathon Challenge |
3:27:35 h | 4 |
| 17.04 | 100km | 32th Fuji 5 Lakes 100 km Challenge |
8:49:57 h | 32 |
| 2019 | ||||
| 24.03 | 100km | 1st Ibaraki 100k Ultra Marathon |
8:26:16 h | 13 |
| 2018 | ||||
| 22.04 | 100km | 28th Fuji 5 Lakes 100 km Challenge |
8:46:09 h | 14 |
| 2017 | ||||
| 11.06 | 50km | 13th Iwate Ginga 50km Marathon Challenge |
3:17:03 h | 2 🥈 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/4/2022 | 32th Fuji 5 Lakes 100 km Challenge | 100,00 | ×4 |
| ✓ 2 | 24/3/2019 | 1st Ibaraki 100k Ultra Marathon | 100,00 | ×4 |
| ✓ 3 | 22/4/2018 | 28th Fuji 5 Lakes 100 km Challenge | 100,00 | ×4 |
| ✓ 4 | 11/11/2023 | 10th Michikusa-Ultra, Minamiizu 78 km | 78,00 | ×3 |
| ✓ 5 | 14/1/2024 | 11th Iikoto Challenge - 5h | 65,67 | ×2 |
| ✓ 6 | 8/6/2025 | 19th Iwate Ginga 50km Marathon Challenge | 50,00 | ×2 |
| ✓ 7 | 9/6/2024 | 18th Iwate Ginga 50km Marathon Challenge | 50,00 | ×2 |
| ✓ 8 | 11/6/2023 | 17th Iwate Ginga 50km Marathon Challenge | 50,00 | ×2 |
| ✓ 9 | 12/6/2022 | 16th Iwate Ginga 50km Marathon Challenge | 50,00 | ×2 |
| ✓ 10 | 11/6/2017 | 13th Iwate Ginga 50km Marathon Challenge | 50,00 | ×2 |