A.L. Schaffer
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Ultrarunner since 1980
4
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
18
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 ?South Africa
South Africa88,9%
Rank quotient ?This runner's calculation uses 4 eligible race(s): Σ(rank − 1) = 12 067; Σ finishers = 13 580. 12 067 / 13 580 × 100 = 88.86%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed4
Km — ultra races327 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
4 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1982 | ||||
| 31.05 | 91km | 57th Comrades Marathon - Down Run |
10:41:24 h | 4240 |
| 1981 | ||||
| 01.06 | 90km | 56th Comrades Marathon - Up Run |
10:36:15 h | 3278 |
| 1980 | ||||
| 31.05 | 90km | 55th Comrades Marathon - Down Run |
10:16:00 h | 3302 |
| 05.04 | 56km | 11th Two Oceans Marathon |
5:42:33 h | 1251 |
| 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 | ×5 |
| ✓ 2 | 1/6/1981 | 56th Comrades Marathon - Up Run | 90,00 | ×5 |
| ✓ 3 | 31/5/1980 | 55th Comrades Marathon - Down Run | 90,00 | ×5 |
| ✓ 4 | 5/4/1980 | 11th Two Oceans Marathon | 56,00 | ×3 |