Masaya (柴崎雅也) Shibasaki
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Born : 1982
Cat. M40 Ultrarunner since 2016
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
32
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
Japan9,7%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 1 169; Σ finishers = 12 062. 1 169 / 12 062 × 100 = 9.69%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 138 km
Longest race100,0 km
34th Fuji 4 Lakes 100 km Challenge — 21/4/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road69,9%
Trail30,1%
Records
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 19.04 | 62km | 36th Fuji 3 Lakes 62 km Challenge |
4:43:02 h | 4 |
| 2025 | ||||
| 20.04 | 62km | 35th Fuji 3 Lakes 62 km Challenge |
5:00:48 h | 7 |
| 2024 | ||||
| 22.12 | 67km | 2nd Coast to Coast Boso hanto |
9:35:24 h | 75 |
| 21.04 | 100km | 34th Fuji 4 Lakes 100 km Challenge |
11:53:37 h | 442 |
| 2023 | ||||
| 17.12 | 70km | 1st Coast to Coast Boso hanto |
7:24:08 h | 13 |
| 16.04 | 100km | 33th Fuji 4 Lakes 100 km Challenge |
8:56:25 h | 23 |
| 2022 | ||||
| 17.04 | 100km | 32th Fuji 5 Lakes 100 km Challenge |
8:41:39 h | 25 |
| 2019 | ||||
| 07.10 | 71km | 1st Fuji 3 Lakes 71 km Autumn Challenge |
5:58:16 h | 7 |
| 21.04 | 100km | 29th Fuji 5 Lakes 100 km Challenge |
10:42:22 h | 238 |
| 2018 | ||||
| 16.12 | 68km | Coast to Coast 70k Trail Run |
9:06:59 h | 106 |
| 22.04 | 100km | 28th Fuji 5 Lakes 100 km Challenge |
9:46:40 h | 88 |
| 2017 | ||||
| 17.12 | 68km | Coast to Coast 70k Trail Run |
8:09:58 h | 34 |
| 23.04 | 100km | 27th Fuji 5 Lakes 100 km Challenge |
9:26:11 h | 68 |
| 2016 | ||||
| 16.12 | 70km | Coast to Coast 70k Trail Run |
8:13:10 h | 53 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/4/2024 | 34th Fuji 4 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 2 | 16/4/2023 | 33th Fuji 4 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 3 | 17/4/2022 | 32th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 4 | 21/4/2019 | 29th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 5 | 22/4/2018 | 28th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 6 | 23/4/2017 | 27th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 7 | 7/10/2019 | 1st Fuji 3 Lakes 71 km Autumn Challenge | 71,00 | ×2 |
| ✓ 8 | 17/12/2023 | 1st Coast to Coast Boso hanto | 70,00 | ×2 |
| ✓ 9 | 16/12/2016 | Coast to Coast 70k Trail Run | 70,00 | ×2 |
| ✓ 10 | 16/12/2018 | Coast to Coast 70k Trail Run | 68,00 | ×2 |
| ✓ 11 | 17/12/2017 | Coast to Coast 70k Trail Run | 68,00 | ×2 |
| ✓ 12 | 22/12/2024 | 2nd Coast to Coast Boso hanto | 67,00 | ×2 |
| ✓ 13 | 19/4/2026 | 36th Fuji 3 Lakes 62 km Challenge | 62,00 | ×1 |
| ✓ 14 | 20/4/2025 | 35th Fuji 3 Lakes 62 km Challenge | 62,00 | ×1 |