Knox Robinson
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Born : 1975
Cat. M50 Ultrarunner since 2012
11
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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 ?
South AfricaUnited States
South AfricaUnited States21,1%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 20 257; Σ finishers = 96 129. 20 257 / 96 129 × 100 = 21.07%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed11
Km — ultra races781 km
Longest race90,0 km
98th Comrades Marathon - Down Run — 8/6/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road74,4%
Trail25,6%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M1
Longest winning streak1
Current streak0
Records
HISTORY
11 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 08.06 | 90km | 98th Comrades Marathon - Down Run |
9:51:32 h | 6040 |
| 2024 | ||||
| 09.06 | 87km | 97th Comrades Marathon - Up Run |
8:49:41 h | 2976 |
| 2023 | ||||
| 11.06 | 87km | 96th Comrades Marathon - Down Run |
9:59:31 h | 6514 |
| 16.01 | 50km | 6th Ted Corbitt 50 km |
4:21:00 h | 1 🏆 |
| 2022 | ||||
| 28.08 | 90km | 95th Comrades Marathon - Down Run |
8:31:55 h | 1272 |
| 2019 | ||||
| 09.06 | 87km | 94th Comrades Marathon - Up Run |
8:32:52 h | 1783 |
| 2018 | ||||
| 10.06 | 90km | 93rd Comrades Marathon - Down Run |
8:26:53 h | 1636 |
| 2016 | ||||
| 30.04 | 50km | 9th Endurance Challenge - New York Trail 50 km |
5:02:12 h | 21 |
| 2014 | ||||
| 03.05 | 50km | 7th Endurance Challenge - New York Trail 50 km |
5:04:11 h | 8 |
| 2012 | ||||
| 10.11 | 50km | 2nd DWG Fatt Ass |
8:45:00 h | 8 |
| 05.05 | 50km | 5th Endurance Challenge - New York Trail 50 km |
5:07:16 h | 9 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/6/2025 | 98th Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 2 | 28/8/2022 | 95th Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 3 | 10/6/2018 | 93rd Comrades Marathon - Down Run | 90,00 | ×3 |
| ✓ 4 | 9/6/2024 | 97th Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 5 | 11/6/2023 | 96th Comrades Marathon - Down Run | 87,00 | ×3 |
| ✓ 6 | 9/6/2019 | 94th Comrades Marathon - Up Run | 87,00 | ×3 |
| ✓ 7 | 16/1/2023 | 6th Ted Corbitt 50 km | 50,00 | ×2 |
| ✓ 8 | 30/4/2016 | 9th Endurance Challenge - New York Trail 50 km | 50,00 | ×2 |
| ✓ 9 | 3/5/2014 | 7th Endurance Challenge - New York Trail 50 km | 50,00 | ×2 |
| ✓ 10 | 10/11/2012 | 2nd DWG Fatt Ass | 50,00 | ×2 |
| ✓ 11 | 5/5/2012 | 5th Endurance Challenge - New York Trail 50 km | 50,00 | ×2 |