Seiji (塚田聖次) Tsukada
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Born : 1964
Cat. M60 Ultrarunner since 2001
6
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
Japan13,2%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 485; Σ finishers = 3 675. 485 / 3 675 × 100 = 13.20%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races730 km
> 100 km1
> 160 km1
> 200 km1
Longest race415,0 km
2nd Trans Japan Alps Race (TJAR) — 8/8/2004
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2007 | ||||
| 07.10 | 50km | 1st Madarao Forest Trails 50km |
8:07:32 h | 112 |
| 27.05 | 50km | OSJ Hakone 50K |
11:11:48 h | 301 |
| 2004 | ||||
| 10.10 | 71.5km | 12th Hasetsune Cup - Japan Mountain Endurance Race |
11:27:51 h | 32 |
| 08.08 | 415km | 2nd Trans Japan Alps Race |
7d 16:00:00 h | 6 |
| 2003 | ||||
| 25.10 | 71.5km | 11th Hasetsune Cup - Japan Mountain Endurance Race |
10:37:33 h | 32 |
| 2001 | ||||
| 06.10 | 71.5km | 9th Hasetsune Cup - Japan Mountain Endurance Race |
10:08:40 h | 8 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/8/2004 | 2nd Trans Japan Alps Race (TJAR) | 415,00 | ×16 |
| ✓ 2 | 10/10/2004 | 12th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 3 | 25/10/2003 | 11th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 4 | 6/10/2001 | 9th Hasetsune Cup - Japan Mountain Endurance Race | 71,50 | ×2 |
| ✓ 5 | 7/10/2007 | 1st Madarao Forest Trails 50km | 50,00 | ×2 |
| ✓ 6 | 27/5/2007 | OSJ Hakone 50K | 50,00 | ×2 |