Taiki (井坂太樹) Isaka
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Born : 1984
Cat. M40 Ultrarunner since 2015
12
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
Japan72,3%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 5 181; Σ finishers = 7 168. 5 181 / 7 168 × 100 = 72.28%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races874 km
> 100 km1
> 160 km1
Longest race167,0 km
8th Ultra-Trail Mt. Fuji (UTMF) — 21/4/2023
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road11,4%
Trail88,6%
Records
HISTORY
12 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2024 | ||||
| 28.04 | 50km | 17th Ishioka Trail Run |
7:49:41 h | 125 |
| 2023 | ||||
| 21.04 | 167km | 8th Ultra-Trail Mt. Fuji |
42:45:16 h | 1457 |
| 2022 | ||||
| 11.12 | 70km | 9th Izu Trail Journey |
10:20:58 h | 372 |
| 2019 | ||||
| 23.06 | 72.6km | 6. Spatrail - Shima to Kusatsu 72K |
12:54:51 h | 545 |
| 24.03 | 100km | 1st Ibaraki 100k Ultra Marathon |
13:57:43 h | 520 |
| 2018 | ||||
| 24.06 | 72.7km | 5. Spatrail - Shima to Kusatsu |
12:28:07 h | 377 |
| 29.04 | 46km | 11th Ishioka Trail Run |
7:33:24 h | 90 |
| 2017 | ||||
| 10.12 | 71.7km | 4th Izu Trail Journey |
13:29:14 h | 989 |
| 29.04 | 49km | 10th Ishioka Trail Run |
7:16:01 h | 140 |
| 2016 | ||||
| 29.04 | 49km | 9th Ishioka Trail Run |
6:59:24 h | 125 |
| 2015 | ||||
| 21.10 | 56km | 1st FunTrails50K Two Lakes&Green line |
10:10:36 h | 181 |
| 30.08 | 70km | 2nd Tsukuba Renjyo 70 km Road & Trail Run |
11:43:18 h | 272 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 21/4/2023 | 8th Ultra-Trail Mt. Fuji (UTMF) | 167,00 | ×6 |
| ✓ 2 | 24/3/2019 | 1st Ibaraki 100k Ultra Marathon | 100,00 | ×4 |
| ✓ 3 | 24/6/2018 | 5. Spatrail - Shima to Kusatsu | 72,70 | ×2 |
| ✓ 4 | 23/6/2019 | 6. Spatrail - Shima to Kusatsu 72K | 72,60 | ×2 |
| ✓ 5 | 10/12/2017 | 4th Izu Trail Journey | 71,70 | ×2 |
| ✓ 6 | 11/12/2022 | 9th Izu Trail Journey | 70,00 | ×2 |
| ✓ 7 | 30/8/2015 | 2nd Tsukuba Renjyo 70 km Road & Trail Run | 70,00 | ×2 |
| ✓ 8 | 21/10/2015 | 1st FunTrails50K Two Lakes&Green line | 56,00 | ×2 |
| ✓ 9 | 28/4/2024 | 17th Ishioka Trail Run | 50,00 | ×2 |
| ✓ 10 | 29/4/2017 | 10th Ishioka Trail Run | 49,00 | ×1 |
| ✓ 11 | 29/4/2016 | 9th Ishioka Trail Run | 49,00 | ×1 |
| ✓ 12 | 29/4/2018 | 11th Ishioka Trail Run | 46,00 | ×1 |