Zygmunt Grzywna
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Born : 1951
Cat. M75 Ultrarunner since 1978
8
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 ?United Kingdom
United Kingdom43,4%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 249; Σ finishers = 574. 249 / 574 × 100 = 43.38%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races649 km
> 100 km1
> 160 km1
Longest race160,9 km
Ewhurst 100 mile road race — 12/6/1982
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1995 | ||||
| 05.03 | 40mi | 9th Barry 40 Mile Track Race |
5:12:47 h | 10 |
| 1983 | ||||
| 25.09 | 86.3km | 33rd London to Brighton Road Race |
7:12:27 h | 73 |
| 27.08 | 36mi | Two Bridges race |
4:41:48 h | 57 |
| 1982 | ||||
| 12.06 | 100mi | Ewhurst 100 mile road race |
13:30:13 h | 2 🥈 |
| 1981 | ||||
| 27.09 | 86.1km | 31st London to Brighton Road Race |
6:33:13 h | 22 |
| 29.08 | 36mi | Two Bridges race |
4:14:55 h | 34 |
| 1980 | ||||
| 28.09 | 87.3km | 30th London to Brighton Road Race |
6:40:33 h | 29 |
| 1978 | ||||
| 02.09 | 30mi | South London Harriers 30 Mile |
3:31:11 h | 30 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 12/6/1982 | Ewhurst 100 mile road race | 160,93 | ×6 |
| ✓ 2 | 28/9/1980 | 30th London to Brighton Road Race | 87,30 | ×3 |
| ✓ 3 | 25/9/1983 | 33rd London to Brighton Road Race | 86,30 | ×3 |
| ✓ 4 | 27/9/1981 | 31st London to Brighton Road Race | 86,10 | ×3 |
| ✓ 5 | 5/3/1995 | 9th Barry 40 Mile Track Race | 64,37 | ×2 |
| ✓ 6 | 27/8/1983 | Two Bridges race | 57,94 | ×2 |
| ✓ 7 | 29/8/1981 | Two Bridges race | 57,94 | ×2 |
| ✓ 8 | 2/9/1978 | South London Harriers 30 Mile | 48,28 | ×2 |