| Year | Distance | Rósmundur Númason | Brynjar Leó Kristinsson | Ratio |
|---|---|---|---|---|
| 2009 | 50 | 03:48:50 | 02:49:52🏅 | 74% |
| 2011 | 50 | 03:35:21 | 02:55:32🏅 | 82% |
| 2012 | 50 | 04:08:57 | 03:12:18🏅 | 77% |
| 2016 | 25 | 02:17:11 | 01:07:05🏅 | 49% |
| 4 races | 0 🏅 | 4 🏅 |
Here you can find a list of other arch-rivals, that is those with most races in common (same year and distance). Click to see detailed comparison.