Kenta (佐久間健太) Sakuma
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Born : 1988
Cat. M35 Ultrarunner since 2023
8
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
Japan20,7%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 1 332; Σ finishers = 6 422. 1 332 / 6 422 × 100 = 20.74%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races765 km
> 100 km3
> 160 km1
Longest race167,0 km
9th Ultra-Trail Mt. Fuji (UTMF) — 26/4/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road41,8%
Trail58,2%
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 20.04 | 120km | 35th Fuji 5 Lakes Sparta Challenge |
13:15:13 h | 136 |
| 2024 | ||||
| 19.05 | 100km | 30th Yatsugatake Nobeyama 100 km |
11:49:33 h | 224 |
| 26.04 | 167km | 9th Ultra-Trail Mt. Fuji |
36:43:54 h | 433 |
| 2023 | ||||
| 10.12 | 70km | 10th Izu Trail Journey |
9:24:50 h | 182 |
| 17.09 | 110km | 15th Shinetsu Five Mountains Trail 110km |
18:37:54 h | 62 |
| 27.08 | 48km | 10th Tsukuba Renjyo 48 km Road & Trail Run |
5:56:54 h | 25 |
| 10.06 | 50km | 3rd Okushinano 100 - 50 km |
7:38:03 h | 53 |
| 16.04 | 100km | 33th Fuji 4 Lakes 100 km Challenge |
11:17:36 h | 225 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 26/4/2024 | 9th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×6 |
| ✓ 2 | 20/4/2025 | 35th Fuji 5 Lakes Sparta Challenge | 120,00 | ×4 |
| ✓ 3 | 17/9/2023 | 15th Shinetsu Five Mountains Trail 110km | 110,00 | ×4 |
| ✓ 4 | 19/5/2024 | 30th Yatsugatake Nobeyama 100 km | 100,00 | ×4 |
| ✓ 5 | 16/4/2023 | 33th Fuji 4 Lakes 100 km Challenge | 100,00 | ×4 |
| ✓ 6 | 10/12/2023 | 10th Izu Trail Journey | 70,00 | ×2 |
| ✓ 7 | 10/6/2023 | 3rd Okushinano 100 - 50 km | 50,00 | ×2 |
| ✓ 8 | 27/8/2023 | 10th Tsukuba Renjyo 48 km Road & Trail Run | 48,00 | ×1 |