Jacek Witczak
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Born : 1973
Cat. M50 Ultrarunner since 2015
6
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
17
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 ?Poland
Poland27,7%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 491; Σ finishers = 1 771. 491 / 1 771 × 100 = 27.72%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races325 km
Longest race68,0 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
No record for a classic ultra format
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2019 | ||||
| 20.07 | 68km | VII. Dolnośląski Festiwal Biegów Górskich - Ultra 68 km |
8:51:58 h | 55 |
| 29.06 | 55km | 6. Ultramaraton Gorski |
7:40:32 h | 38 |
| 2017 | ||||
| 27.05 | 46km | Chojnik Maraton (CHM) 46 km |
6:19:40 h | 108 |
| 26.02 | 48km | 1. Zimowy Ultra Janosik 48km |
5:19:19 h | 94 |
| 2016 | ||||
| 12.03 | 53km | III. Zimowy Ultramaraton Karkonoski |
8:58:16 h | 169 |
| 2015 | ||||
| 09.05 | 55km | II. GWINT Ultra Cross 55 km |
5:46:59 h | 33 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 20/7/2019 | VII. Dolnośląski Festiwal Biegów Górskich - Ultra 68 km | 68,00 | ×4 |
| ✓ 2 | 29/6/2019 | 6. Ultramaraton Gorski | 55,00 | ×3 |
| ✓ 3 | 9/5/2015 | II. GWINT Ultra Cross 55 km | 55,00 | ×3 |
| ✓ 4 | 12/3/2016 | III. Zimowy Ultramaraton Karkonoski | 53,00 | ×3 |
| ✓ 5 | 26/2/2017 | 1. Zimowy Ultra Janosik 48km | 48,00 | ×2 |
| ✓ 6 | 27/5/2017 | Chojnik Maraton (CHM) 46 km | 46,00 | ×2 |