Kenji (山平健司) Yamahira
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Born : 1981
Cat. M45 Ultrarunner since 2022
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
17
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
Japan18,6%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 639; Σ finishers = 3 436. 639 / 3 436 × 100 = 18.60%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed5
Km — ultra races371 km
> 100 km1
Longest race110,0 km
15th Shinetsu Five Mountains Trail 110km — 17/9/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 12.10 | 71.5km | 33th Hasetsune Cup - Japan Mountain Endurance Race |
15:08:23 h | 341 |
| 2023 | ||||
| 17.12 | 70km | 1st Coast to Coast Boso hanto |
9:03:53 h | 76 |
| 17.09 | 110km | 15th Shinetsu Five Mountains Trail 110km |
18:09:10 h | 53 |
| 2022 | ||||
| 11.12 | 70km | 9th Izu Trail Journey |
9:11:24 h | 147 |
| 30.10 | 49.6km | 10th Trainic world Ogose-Tokigawa Trail Run 50km |
7:01:53 h | 27 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/9/2023 | 15th Shinetsu Five Mountains Trail 110km | 110,00 | ×6 |
| ✓ 2 | 12/10/2025 | 33th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×4 |
| ✓ 3 | 17/12/2023 | 1st Coast to Coast Boso hanto | 70,00 | ×4 |
| ✓ 4 | 11/12/2022 | 9th Izu Trail Journey | 70,00 | ×4 |
| ✓ 5 | 30/10/2022 | 10th Trainic world Ogose-Tokigawa Trail Run 50km | 49,60 | ×2 |