Ian Henderson
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Born : 1951
Cat. M75 Ultrarunner since 1996
15
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 Africa61,4%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 69 996; Σ finishers = 114 054. 69 996 / 114 054 × 100 = 61.37%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed15
Km — ultra races1 101 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)
Road76,9%
Trail23,1%
Records
HISTORY
15 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2005 | ||||
| 10.09 | 50km | 13. Mont-Aux-Sources 50km Challenge |
9:50:32 h | 245 |
| 2004 | ||||
| 16.06 | 87km road race | 79th Comrades Marathon - Up Run |
11:25:05 h | 8306 |
| 2003 | ||||
| 19.07 | 52km | 15th Rhodes 52 km Trail Run |
7:46:27 h | 220 |
| 16.06 | 89km road race | 78th Comrades Marathon - Down Run |
11:22:50 h | 9490 |
| 2002 | ||||
| 17.06 | 87km road race | 77th Comrades Marathon - Up Run |
10:37:57 h | 6758 |
| 2001 | ||||
| 01.09 | 50km | 9. Mont-Aux-Sources 50km Challenge |
7:22:53 h | 147 |
| 21.07 | 52km | 13th Rhodes 52 km Trail Run |
7:21:24 h | 129 |
| 16.06 | 89km road race | 76th Comrades Marathon - Down Run |
10:07:23 h | 5974 |
| 2000 | ||||
| 02.09 | 50km | 8. Mont-Aux-Sources 50km Challenge |
8:38:34 h | 132 |
| 16.06 | 87km road race | 75th Comrades Marathon - Up Run |
10:14:47 h | 7983 |
| 1999 | ||||
| 16.06 | 89km | 74th Comrades Marathon - Down Run |
10:18:37 h | 7111 |
| 1998 | ||||
| 16.06 | 87km | 73rd Comrades Marathon - Up Run |
10:14:59 h | 6195 |
| 1997 | ||||
| 16.06 | 89km | 72nd Comrades Marathon - Down Run |
10:06:33 h | 6423 |
| 29.03 | 56km | 28th Two Oceans Marathon |
5:32:57 h | 4034 |
| 1996 | ||||
| 17.06 | 87km | 71st Comrades Marathon - Up Run |
10:07:17 h | 6864 |
| 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 | 16/6/1997 | 72nd Comrades Marathon - Down Run | 89,00 | ×3 |
| ✓ 5 | 16/6/2004 | 79th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 6 | 17/6/2002 | 77th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 7 | 16/6/2000 | 75th Comrades Marathon - Up Run (RSA) | 87,00 | ×3 |
| ✓ 8 | 16/6/1998 | 73rd Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 9 | 17/6/1996 | 71st Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 10 | 29/3/1997 | 28th Two Oceans Marathon | 56,00 | ×1 |
| ✓ 11 | 19/7/2003 | 15th Rhodes 52 km Trail Run | 52,00 | ×1 |
| ✓ 12 | 21/7/2001 | 13th Rhodes 52 km Trail Run | 52,00 | ×1 |
| ✓ 13 | 10/9/2005 | 13. Mont-Aux-Sources 50km Challenge | 50,00 | ×1 |
| ✓ 14 | 1/9/2001 | 9. Mont-Aux-Sources 50km Challenge | 50,00 | ×1 |
| ✓ 15 | 2/9/2000 | 8. Mont-Aux-Sources 50km Challenge | 50,00 | ×1 |