Tetsu (石川哲) Ishikawa
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Born : 1981
Cat. M45 Ultrarunner since 2012
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
23
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
Japan34,6%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 1 409; Σ finishers = 4 073. 1 409 / 4 073 × 100 = 34.59%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed9
Km — ultra races636 km
Longest race100,0 km
19th River Shimanto 100km — 20/10/2013
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
9 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2016 | ||||
| 27.03 | 50km | 2nd Osaka Yodogawa 50 km Ultra Marathon |
5:06:21 h | 66 |
| 2015 | ||||
| 27.09 | 66km | 18th Muraoka 66 km Ultra Marathon |
8:47:52 h | 85 |
| 04.05 | 70km | 27. Yamaguchi 100 Hagi-O-Kan Maranic 70 km |
9:31:41 h | 124 |
| 26.04 | 70km | 7th 70 km Ultra Maranic Osaka |
7:51:07 h | 40 |
| 2014 | ||||
| 28.09 | 66km | 17th Muraoka 66 km Ultra Marathon |
8:13:26 h | 60 |
| 2013 | ||||
| 20.10 | 100km | 19th River Shimanto 100km |
12:55:04 h | 649 |
| 29.09 | 88km | 16th Muraoka 88 km Ultra Marathon |
12:00:58 h | 59 |
| 15.09 | 60km | 13th Tango 60 km Ultramarathon |
6:37:49 h | 215 |
| 2012 | ||||
| 30.09 | 66km | 15th Muraoka 66 km Ultra Marathon |
9:32:34 h | 120 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 20/10/2013 | 19th River Shimanto 100km | 100,00 | ×4 |
| ✓ 2 | 29/9/2013 | 16th Muraoka 88 km Ultra Marathon | 88,00 | ×3 |
| ✓ 3 | 4/5/2015 | 27. Yamaguchi 100 Hagi-O-Kan Maranic 70 km | 70,00 | ×3 |
| ✓ 4 | 26/4/2015 | 7th 70 km Ultra Maranic Osaka | 70,00 | ×3 |
| ✓ 5 | 27/9/2015 | 18th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 6 | 28/9/2014 | 17th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 7 | 30/9/2012 | 15th Muraoka 66 km Ultra Marathon | 66,00 | ×2 |
| ✓ 8 | 15/9/2013 | 13th Tango 60 km Ultramarathon | 60,00 | ×2 |
| ✓ 9 | 27/3/2016 | 2nd Osaka Yodogawa 50 km Ultra Marathon | 50,00 | ×2 |