Tetsuya (吉田哲也) Yoshida
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Born : 1973
Cat. M50 Ultrarunner since 2016
11
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
Japan34,2%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 3 343; Σ finishers = 9 771. 3 343 / 9 771 × 100 = 34.21%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races1 019 km
> 100 km1
Longest race100,8 km
6th Okushinano 100 — 6/6/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road71,8%
Trail28,2%
Records
HISTORY
12 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 06.06 | 100.8km | 6th Okushinano 100 |
16:44:56 h | 214 |
| 2025 | ||||
| 05.10 | 51.4km | 13th Trainic world Ogose-Tokigawa Trail Run 50km |
9:03:17 h | 111 |
| 20.04 | 100km | 35th Fuji 4 Lakes 100 km Challenge |
11:19:34 h | 350 |
| 2019 | ||||
| 19.10 | 100km | 4th Iki 100 km Ultra Marathon |
12:41:34 h | 133 |
| 02.06 | 53.7km | 19th Rishiri Island Ultra Marathon |
7:06:19 h | 257 |
| 02.06 | 78km | 26. Ultramarathon Okumusashi |
8:40:04 h | 373 |
| 19.05 | 100km | 7th Tokyo Shibamata 100 km |
11:59:36 h | 573 |
| 2018 | ||||
| 20.10 | 100km | 3rd Iki 100 km Ultra Marathon |
9:56:59 h | 32 |
| 21.07 | 67.5km | 6th Kirishima Ebino-kougen Extreme Trail |
10:43:14 h | 96 |
| 2017 | ||||
| 23.07 | 67.5km | 5th Kirishima Ebino-kougen Extreme Trail |
12:47:06 h | 251 |
| 04.06 | 100km | 5th Tokyo Shibamata 100 km |
11:28:28 h | 488 |
| 2016 | ||||
| 05.06 | 100km | 4th Tokyo Shibamata 100 km |
11:55:11 h | 477 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 6/6/2026 | 6th Okushinano 100 | 100,80 | ×3 |
| ✓ 2 | 20/4/2025 | 35th Fuji 4 Lakes 100 km Challenge | 100,00 | ×3 |
| ✓ 3 | 19/10/2019 | 4th Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 4 | 19/5/2019 | 7th Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 5 | 20/10/2018 | 3rd Iki 100 km Ultra Marathon | 100,00 | ×3 |
| ✓ 6 | 4/6/2017 | 5th Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 7 | 5/6/2016 | 4th Tokyo Shibamata 100 km | 100,00 | ×3 |
| ✓ 8 | 2/6/2019 | 26. Ultramarathon Okumusashi | 78,00 | ×2 |
| ✓ 9 | 21/7/2018 | 6th Kirishima Ebino-kougen Extreme Trail | 67,50 | ×2 |
| ✓ 10 | 23/7/2017 | 5th Kirishima Ebino-kougen Extreme Trail | 67,50 | ×2 |
| ✓ 11 | 5/10/2025 | 13th Trainic world Ogose-Tokigawa Trail Run 50km | 51,40 | ×1 |