Hideo (坂井英雄) Sakai
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Born : 1978
Cat. M45 Ultrarunner since 2017
11
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
Japan35,3%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 845; Σ finishers = 2 396. 845 / 2 396 × 100 = 35.27%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races718 km
Longest race100,0 km
3. OSJ Aizu Bandaisan Ultramarathon - 100 km — 15/6/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road48,7%
Trail51,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
11 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 14.06 | 63km | 12th Echigo Country Trail |
9:36:31 h | 75 |
| 2025 | ||||
| 14.06 | 48km | 4th KTF Trail running race - Rockin Bear |
6:06:09 h | 130 |
| 2024 | ||||
| 15.06 | 100km | 3. OSJ Aizu Bandaisan Ultramarathon - 100 km |
11:54:19 h | 42 |
| 2023 | ||||
| 24.09 | 100km | 5th Aga Ultra Marathon - 100km |
11:59:01 h | 19 |
| 17.06 | 50km | 2nd KTF Trail running race - Rockin Bear |
6:20:14 h | 86 |
| 2022 | ||||
| 25.09 | 86km | 4th Aga Ultra Marathon - 86km |
9:16:13 h | 2 🥈 |
| 25.06 | 48km | 1st KTF Trail running race - Rockin Bear |
6:13:12 h | 37 |
| 2019 | ||||
| 16.06 | 53km | 5th Echigo Country Trail |
8:02:02 h | 146 |
| 2018 | ||||
| 30.09 | 64km | 5th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K |
7:22:04 h | 13 |
| 17.06 | 53km | 4th Echigo Country Trail |
9:13:49 h | 177 |
| 2017 | ||||
| 18.06 | 53km | 3rd Echigo Country Trail |
8:14:30 h | 129 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/6/2024 | 3. OSJ Aizu Bandaisan Ultramarathon - 100 km | 100,00 | ×4 |
| ✓ 2 | 24/9/2023 | 5th Aga Ultra Marathon - 100km | 100,00 | ×4 |
| ✓ 3 | 25/9/2022 | 4th Aga Ultra Marathon - 86km | 86,00 | ×3 |
| ✓ 4 | 30/9/2018 | 5th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K | 64,00 | ×2 |
| ✓ 5 | 14/6/2026 | 12th Echigo Country Trail | 63,00 | ×2 |
| ✓ 6 | 16/6/2019 | 5th Echigo Country Trail | 53,00 | ×2 |
| ✓ 7 | 17/6/2018 | 4th Echigo Country Trail | 53,00 | ×2 |
| ✓ 8 | 18/6/2017 | 3rd Echigo Country Trail | 53,00 | ×2 |
| ✓ 9 | 17/6/2023 | 2nd KTF Trail running race - Rockin Bear | 50,00 | ×2 |
| ✓ 10 | 14/6/2025 | 4th KTF Trail running race - Rockin Bear | 48,00 | ×1 |
| ✓ 11 | 25/6/2022 | 1st KTF Trail running race - Rockin Bear | 48,00 | ×1 |