Nelson Vlakbok
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Born : 1964
Cat. M60 Ultrarunner since 2002
17
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
29
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 Africa17,0%
Rank quotient ?This runner's calculation uses 17 eligible race(s): Σ(rank − 1) = 13 626; Σ finishers = 80 364. 13 626 / 80 364 × 100 = 16.96%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed17
Km — ultra races1 145 km
Longest race89,0 km
89th Comrades Marathon - Down Run — 1/6/2014
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road100,0%
Records
HISTORY
17 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2015 | ||||
| 31.05 | 87km | 90th Comrades Marathon - Up Run |
8:54:07 h | 1842 |
| 21.02 | 50km | Bay Ultra 50 km |
4:05:30 h | 18 |
| 2014 | ||||
| 01.06 | 89km | 89th Comrades Marathon - Down Run |
9:00:28 h | 2339 |
| 22.02 | 50km | Bay Ultra 50 km |
4:07:14 h | 31 |
| 2013 | ||||
| 02.06 | 87km road race | 88th Comrades Marathon - Up Run |
9:24:09 h | 2169 |
| 27.04 | 50km | 30th Bay Ultra 50 km |
4:02:39 h | 22 |
| 2012 | ||||
| 03.06 | 89km road race | 87th Comrades Marathon - Down Run |
8:14:01 h | 1222 |
| 28.04 | 50km | 34th Bruintjieshoogte Ultra Marathon 50km |
3:57:37 h | 19 |
| 03.03 | 50km | 29th Bay Ultra 50 km |
3:54:18 h | 20 |
| 2008 | ||||
| 19.04 | 60km | Clover Settlers 60 km Ultra |
4:59:00 h | 55 |
| 2007 | ||||
| 28.04 | 60km | Clover Settlers 60 km Ultra |
5:08:35 h | 79 |
| 2005 | ||||
| 30.04 | 60km | Clover Settlers 60 km Ultra |
4:50:24 h | 64 |
| 19.02 | 50km | 23rd Bay Ultra 50 km |
3:59:40 h | 38 |
| 2004 | ||||
| 16.06 | 87km road race | 79th Comrades Marathon - Up Run |
7:54:01 h | 791 |
| 21.02 | 50km | 22nd Bay Ultra 50 km |
3:52:04 h | 65 |
| 2003 | ||||
| 16.06 | 89km road race | 78th Comrades Marathon - Down Run |
7:59:38 h | 1157 |
| 2002 | ||||
| 17.06 | 87km road race | 77th Comrades Marathon - Up Run |
9:36:43 h | 3712 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 1/6/2014 | 89th Comrades Marathon - Down Run | 89,00 | ×3 |
| ✓ 2 | 3/6/2012 | 87th Comrades Marathon - Down Run (RSA) | 89,00 | ×3 |
| ✓ 3 | 16/6/2003 | 78th Comrades Marathon - Down Run (RSA) | 89,00 | ×3 |
| ✓ 4 | 31/5/2015 | 90th Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 5 | 2/6/2013 | 88th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 6 | 16/6/2004 | 79th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 7 | 17/6/2002 | 77th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 8 | 19/4/2008 | Clover Settlers 60 km Ultra | 60,00 | ×2 |
| ✓ 9 | 28/4/2007 | Clover Settlers 60 km Ultra | 60,00 | ×2 |
| ✓ 10 | 30/4/2005 | Clover Settlers 60 km Ultra | 60,00 | ×2 |
| ✓ 11 | 21/2/2015 | Bay Ultra 50 km | 50,00 | ×1 |
| ✓ 12 | 22/2/2014 | Bay Ultra 50 km | 50,00 | ×1 |
| ✓ 13 | 27/4/2013 | 30th Bay Ultra 50 km | 50,00 | ×1 |
| ✓ 14 | 28/4/2012 | 34th Bruintjieshoogte Ultra Marathon 50km | 50,00 | ×1 |
| ✓ 15 | 3/3/2012 | 29th Bay Ultra 50 km | 50,00 | ×1 |
| ✓ 16 | 19/2/2005 | 23rd Bay Ultra 50 km | 50,00 | ×1 |
| ✓ 17 | 21/2/2004 | 22nd Bay Ultra 50 km | 50,00 | ×1 |