Iku (倉橋郁) Kurahashi
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Born : 1968
Cat. W55 Ultrarunner since 2011
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
24
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
Japan8,6%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 356; Σ finishers = 4 147. 356 / 4 147 × 100 = 8.58%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races642 km
> 100 km3
Longest race118,0 km
25th Fuji 5 Lakes 118 km Challenge — 19/4/2015
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F1
Longest winning streak0
Current streak0
Records
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2016 | ||||
| 05.06 | 100km | 4th Tokyo Shibamata 100 km |
10:34:40 h | 187 |
| 2015 | ||||
| 19.04 | 118km | 25th Fuji 5 Lakes 118 km Challenge |
12:02:56 h | 56 |
| 2014 | ||||
| 01.06 | 100km | 2nd Tokyo Shibamata 100 km (Registered athletes) |
9:46:08 h | 8 |
| 2013 | ||||
| 01.06 | 100km | 1st Tokyo Shibamata 100 km |
9:01:04 h | 23 |
| 2012 | ||||
| 22.04 | 112km | 22nd Fuji 5 Lakes 112 km Challenge |
10:43:27 h | 34 |
| 2011 | ||||
| 30.04 | 112km | 21st Fuji 5 Lakes 112 km Challenge |
11:19:35 h | 54 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 19/4/2015 | 25th Fuji 5 Lakes 118 km Challenge | 118,00 | ×4 |
| ✓ 2 | 22/4/2012 | 22nd Fuji 5 Lakes 112 km Challenge | 112,00 | ×4 |
| ✓ 3 | 30/4/2011 | 21st Fuji 5 Lakes 112 km Challenge | 112,00 | ×4 |
| ✓ 4 | 5/6/2016 | 4th Tokyo Shibamata 100 km | 100,00 | ×4 |
| ✓ 5 | 1/6/2014 | 2nd Tokyo Shibamata 100 km (Registered athletes) | 100,00 | ×4 |
| ✓ 6 | 1/6/2013 | 1st Tokyo Shibamata 100 km | 100,00 | ×4 |