Irene Kok
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Born : 1971
Cat. W55 Ultrarunner since 2017
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 ?United States
United States73,7%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 824; Σ finishers = 1 118. 824 / 1 118 × 100 = 73.70%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races852 km
> 100 km1
> 160 km1
Longest race160,9 km
7th The Hennepin Hundred - 100 Mile Run — 2/10/2021
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
HISTORY
12 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 18.04 | 50km | 15th Earth Day 50k |
7:26:38 h | 61 |
| 2025 | ||||
| 26.04 | 50km | 14th Earth Day 50k |
6:45:44 h | 39 |
| 2024 | ||||
| 04.08 | 50mi | 6th Badger Trail Races by Ten Junk Miles Racing |
11:28:43 h | 12 |
| 20.04 | 50km | 13th Earth Day 50k |
7:25:41 h | 79 |
| 2021 | ||||
| 02.10 | 100mi | 7th The Hennepin Hundred - 100 Mile Run |
29:46:05 h | 130 |
| 29.07 | 50km | 7th Bunk House Trail Runs |
8:25:50 h | 30 |
| 2018 | ||||
| 12.05 | 50mi | 37th Ice Age Trail 50 Mile Run |
11:23:49 h | 246 |
| 21.04 | 50km | 7th Earth Day 50k |
7:00:55 h | 80 |
| 2017 | ||||
| 14.10 | 50mi | 8th Des Plaines River 50 Miles Trail Race |
9:29:27 h | 24 |
| 29.07 | 50km | 3rd Hot Hilly Hairy Ultra 50 km |
5:40:54 h | 14 |
| 03.06 | 100km | 22nd Kettle Moraine 100 km Endurance Run |
16:34:37 h | 57 |
| 22.04 | 50km | 6th Earth Day 50k |
7:29:36 h | 64 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 2/10/2021 | 7th The Hennepin Hundred - 100 Mile Run | 160,93 | ×6 |
| ✓ 2 | 3/6/2017 | 22nd Kettle Moraine 100 km Endurance Run | 100,00 | ×4 |
| ✓ 3 | 4/8/2024 | 6th Badger Trail Races by Ten Junk Miles Racing | 80,47 | ×3 |
| ✓ 4 | 12/5/2018 | 37th Ice Age Trail 50 Mile Run | 80,47 | ×3 |
| ✓ 5 | 14/10/2017 | 8th Des Plaines River 50 Miles Trail Race | 80,47 | ×3 |
| ✓ 6 | 18/4/2026 | 15th Earth Day 50k | 50,00 | ×2 |
| ✓ 7 | 26/4/2025 | 14th Earth Day 50k | 50,00 | ×2 |
| ✓ 8 | 20/4/2024 | 13th Earth Day 50k | 50,00 | ×2 |
| ✓ 9 | 29/7/2021 | 7th Bunk House Trail Runs | 50,00 | ×2 |
| ✓ 10 | 21/4/2018 | 7th Earth Day 50k | 50,00 | ×2 |
| ✓ 11 | 29/7/2017 | 3rd Hot Hilly Hairy Ultra 50 km | 50,00 | ×2 |
| ✓ 12 | 22/4/2017 | 6th Earth Day 50k | 50,00 | ×2 |