Kazuyoshi (吉村一良) Yoshimura
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Ultrarunner since 2010
7
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
Japan66,7%
Rank quotient ?This runner's calculation uses 7 eligible race(s): Σ(rank − 1) = 2 048; Σ finishers = 3 069. 2 048 / 3 069 × 100 = 66.73%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed7
Km — ultra races458 km
Longest race100,0 km
5. Okinoshima 100km Ultra Marathon — 20/6/2010
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
7 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 31.05 | 62km | 13th Tojinbo 62 km Ultramarathon |
10:15:18 h | 306 |
| 2024 | ||||
| 25.05 | 62km | 12th Tojinbo 62 km Ultramarathon |
10:01:31 h | 236 |
| 2023 | ||||
| 27.05 | 62km | 11th Tojinbo 62 km Ultramarathon |
9:41:45 h | 272 |
| 2019 | ||||
| 25.05 | 52km | 8th Tojinbo 52 km Ultramarathon |
8:22:39 h | 87 |
| 2018 | ||||
| 16.09 | 60km | 18th Tango 60 km Ultramarathon |
8:53:47 h | 545 |
| 2016 | ||||
| 18.09 | 60km | 16th Tango 60 km Ultramarathon |
8:06:06 h | 489 |
| 2010 | ||||
| 20.06 | 100km | 5. Okinoshima 100km Ultra Marathon |
12:51:24 h | 120 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 20/6/2010 | 5. Okinoshima 100km Ultra Marathon | 100,00 | ×5 |
| ✓ 2 | 31/5/2025 | 13th Tojinbo 62 km Ultramarathon | 62,00 | ×3 |
| ✓ 3 | 25/5/2024 | 12th Tojinbo 62 km Ultramarathon | 62,00 | ×3 |
| ✓ 4 | 27/5/2023 | 11th Tojinbo 62 km Ultramarathon | 62,00 | ×3 |
| ✓ 5 | 16/9/2018 | 18th Tango 60 km Ultramarathon | 60,00 | ×3 |
| ✓ 6 | 18/9/2016 | 16th Tango 60 km Ultramarathon | 60,00 | ×3 |
| ✓ 7 | 25/5/2019 | 8th Tojinbo 52 km Ultramarathon | 52,00 | ×2 |