Jonathan Gardner
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Ultrarunner since 1967
14
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
2
Countries visited ?
United KingdomSouth Africa
United KingdomSouth Africa15,1%
Rank quotient ?This runner's calculation uses 14 eligible race(s): Σ(rank − 1) = 5 073; Σ finishers = 33 512. 5 073 / 33 512 × 100 = 15.14%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed14
Km — ultra races1 208 km
Longest race91,0 km
57th Comrades Marathon - Down Run — 31/5/1982
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
No record for a classic ultra format
HISTORY
14 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1985 | ||||
| 31.05 | 88km | 60th Comrades Marathon - Up Run |
9:19:59 h | 3337 |
| 1982 | ||||
| 31.05 | 91km | 57th Comrades Marathon - Down Run |
7:17:21 h | 384 |
| 1981 | ||||
| 01.06 | 90km | 56th Comrades Marathon - Up Run |
7:28:10 h | 405 |
| 1980 | ||||
| 31.05 | 90km | 55th Comrades Marathon - Down Run |
6:53:00 h | 164 |
| 1979 | ||||
| 31.05 | 87km | 54th Comrades Marathon - Up Run |
6:59:06 h | 115 |
| 1978 | ||||
| 31.05 | 90km | 53rd Comrades Marathon - Down Run |
6:40:00 h | 63 |
| 1977 | ||||
| 31.05 | 89km | 52nd Comrades Marathon - Up Run |
6:40:00 h | 33 |
| 09.04 | 56km | 8th Two Oceans Marathon |
3:41:56 h | 22 |
| 1976 | ||||
| 31.05 | 90km | 51st Comrades Marathon - Down Run |
7:04:00 h | 99 |
| 1975 | ||||
| 28.09 | 84.7km | 25th London to Brighton Road Race |
6:13:58 h | 30 |
| 31.05 | 87km | 50th Comrades Marathon - Up Run |
6:49:00 h | 49 |
| 1974 | ||||
| 31.05 | 87km | 49th Comrades Marathon - Up Run |
6:49:00 h | 36 |
| 1973 | ||||
| 01.06 | 88km | 48th Comrades Marathon - Down Run |
7:01:00 h | 106 |
| 1967 | ||||
| 31.05 | 90km | 42nd Comrades Marathon - Down Run |
9:42:59 h | 244 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 31/5/1982 | 57th Comrades Marathon - Down Run | 91,00 | ×3 |
| ✓ 2 | 1/6/1981 | 56th Comrades Marathon - Up Run | 90,00 | ×3 |
| ✓ 3 | 31/5/1980 | 55th Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 4 | 31/5/1978 | 53rd Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 5 | 31/5/1976 | 51st Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 6 | 31/5/1967 | 42nd Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 7 | 31/5/1977 | 52nd Comrades Marathon - Up Run | 89,00 | ×2 |
| ✓ 8 | 31/5/1985 | 60th Comrades Marathon - Up Run | 88,00 | ×2 |
| ✓ 9 | 1/6/1973 | 48th Comrades Marathon - Down Run | 88,00 | ×2 |
| ✓ 10 | 31/5/1979 | 54th Comrades Marathon - Up Run | 87,00 | ×2 |
| ✓ 11 | 31/5/1975 | 50th Comrades Marathon - Up Run | 87,00 | ×2 |
| ✓ 12 | 31/5/1974 | 49th Comrades Marathon - Up Run | 87,00 | ×2 |
| ✓ 13 | 28/9/1975 | 25th London to Brighton Road Race | 84,70 | ×2 |
| ✓ 14 | 9/4/1977 | 8th Two Oceans Marathon | 56,00 | ×1 |