Nobuyuki (山津信幸) Yamatsu
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Born : 1969
Cat. M55 Ultrarunner since 2015
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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
Japan6,4%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 306; Σ finishers = 4 794. 306 / 4 794 × 100 = 6.38%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races969 km
Longest race100,0 km
7th Iki 100 km Ultra Marathon — 19/10/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M2
Longest winning streak1
Current streak0
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 14.06 | 84.39km | 10th JAL Mukatsuku Double Marathon |
8:45:50 h | 49 |
| 2024 | ||||
| 19.10 | 100km | 7th Iki 100 km Ultra Marathon |
10:04:23 h | 29 |
| 30.06 | 100km | 39. Lake Saroma 100 km Ultramarathon |
9:18:07 h | 139 |
| 2023 | ||||
| 21.10 | 100km | 6th Iki 100 km Ultra Marathon |
8:34:26 h | 10 |
| 11.06 | 84.39km | 7th JAL Mukatsuku Double Marathon |
7:35:31 h | 10 |
| 2022 | ||||
| 15.10 | 100km | 5th Iki 100 km Ultra Marathon |
8:32:38 h | 6 |
| 2019 | ||||
| 19.10 | 100km | 4th Iki 100 km Ultra Marathon |
8:24:37 h | 4 |
| 2018 | ||||
| 20.10 | 100km | 3rd Iki 100 km Ultra Marathon |
9:15:01 h | 12 |
| 2015 | ||||
| 17.10 | 100km | 1. Kirishima Ultra Travel Marathon - 100km |
8:44:00 h | 1 🏆 |
| 06.06 | 100km | 25th Aso Caldera Super Marathon 100 km |
9:19:23 h | 56 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 19/10/2024 | 7th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 2 | 30/6/2024 | 39. Lake Saroma 100 km Ultramarathon | 100,00 | ×3 |
| ✓ 3 | 21/10/2023 | 6th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 15/10/2022 | 5th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 5 | 19/10/2019 | 4th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 6 | 20/10/2018 | 3rd Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 7 | 17/10/2015 | 1. Kirishima Ultra Travel Marathon - 100km | 100,00 | ×3 |
| ✓ 8 | 6/6/2015 | 25th Aso Caldera Super Marathon 100 km | 100,00 | ×3 |
| ✓ 9 | 14/6/2026 | 10th JAL Mukatsuku Double Marathon | 84,39 | ×3 |
| ✓ 10 | 11/6/2023 | 7th JAL Mukatsuku Double Marathon | 84,39 | ×3 |