Roy Black
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Born : 1972
Cat. M50 Ultrarunner since 1999
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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 Africa21,0%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 19 963; Σ finishers = 95 281. 19 963 / 95 281 × 100 = 20.95%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 065 km
Longest race89,0 km
78th Comrades Marathon - Down Run (RSA) — 16/6/2003
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
17 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 16/6/2003 | 78th Comrades Marathon - Down Run (RSA) | 89,00 | ×3 |
| ✓ 2 | 16/6/2001 | 76th Comrades Marathon - Down Run (RSA) | 89,00 | ×3 |
| ✓ 3 | 16/6/1999 | 74th Comrades Marathon - Down Run | 89,00 | ×3 |
| ✓ 4 | 17/6/2002 | 77th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 5 | 16/6/2000 | 75th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 6 | 28/3/2009 | 22nd Xstrata Longtom Ultra Marathon 56km | 56,00 | ×2 |
| ✓ 7 | 19/4/2003 | 34th Two Oceans Marathon (RSA) | 56,00 | ×2 |
| ✓ 8 | 14/4/2001 | 32rd Two Oceans Marathon | 56,00 | ×2 |
| ✓ 9 | 3/4/1999 | 30th Two Oceans Marathon | 56,00 | ×2 |
| ✓ 10 | 18/4/2009 | 23th Loskop Ultra Marathon 50km | 50,00 | ×1 |
| ✓ 11 | 17/3/2007 | 17th Om Die Dam 50km | 50,00 | ×1 |
| ✓ 12 | 18/3/2006 | 16th Om Die Dam 50km | 50,00 | ×1 |
| ✓ 13 | 23/4/2005 | 19th Loskop Ultra Marathon 50km | 50,00 | ×1 |
| ✓ 14 | 19/3/2005 | 15th Om Die Dam 50km | 50,00 | ×1 |
| ✓ 15 | 15/3/2003 | 13th Om Die Dam 50km (RSA) | 50,00 | ×1 |
| ✓ 16 | 16/3/2002 | 12th Om Die Dam 50km (RSA) | 50,00 | ×1 |
| ✓ 17 | 17/3/2001 | 11th Om Die Dam 50km | 50,00 | ×1 |