Masako (谷口雅子) Taniguchi
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Born : 1970
Cat. W55 Ultrarunner since 2020
11
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
27
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
Japan61,1%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 4 166; Σ finishers = 6 817. 4 166 / 6 817 × 100 = 61.11%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races920 km
> 100 km2
Longest race128,0 km
6th Tokyo Great Race — 8/11/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F2
Longest winning streak0
Current streak0
Records
HISTORY
11 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 31.05 | 100km | 1st Nara Ultra Marathon |
13:54:17 h | 1657 |
| 11.04 | 8h | 21st Toda Saiko 8 Hours |
55.000 km | 101 |
| 2025 | ||||
| 08.11 | 128km | 6th Tokyo Great Race |
20:26:21 h | 9 |
| 2024 | ||||
| 30.06 | 100km | 39. Lake Saroma 100 km Ultramarathon |
12:14:04 h | 1057 |
| 09.03 | 115km | 14th Oedo Night run 115k |
17:04:26 h | 33 |
| 2023 | ||||
| 11.03 | 90km | 13th Little Edo 90k |
10:35:52 h | 18 |
| 2022 | ||||
| 03.07 | 8h | 28th 8-Hour Endurance Race Tokorozawa |
53.900 km | 130 |
| 17.04 | 100km | 32th Fuji 5 Lakes 100 km Challenge |
12:06:39 h | 437 |
| 2021 | ||||
| 04.07 | 8h | 27th 8-Hour Endurance Race Tokorozawa |
58.800 km | 225 |
| 10.04 | 70km | 16th Toda Saiko 70 km |
8:09:42 h | 312 |
| 2020 | ||||
| 05.07 | 8h | 26th 8-Hour Endurance Race Tokorozawa |
49.000 km | 198 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/11/2025 | 6th Tokyo Great Race | 128,00 | ×4 |
| ✓ 2 | 9/3/2024 | 14th Oedo Night run 115k | 115,00 | ×4 |
| ✓ 3 | 31/5/2026 | 1st Nara Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 5 | 17/4/2022 | 32th Fuji 5 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 6 | 11/3/2023 | 13th Little Edo 90k | 90,00 | ×3 |
| ✓ 7 | 10/4/2021 | 16th Toda Saiko 70 km | 70,00 | ×2 |
| ✓ 8 | 4/7/2021 | 27th 8-Hour Endurance Race Tokorozawa | 58,80 | ×2 |
| ✓ 9 | 11/4/2026 | 21st Toda Saiko 8 Hours | 55,00 | ×2 |
| ✓ 10 | 3/7/2022 | 28th 8-Hour Endurance Race Tokorozawa | 53,90 | ×1 |
| ✓ 11 | 5/7/2020 | 26th 8-Hour Endurance Race Tokorozawa | 49,00 | ×1 |