| Year | Distance | Unnsteinn Jónsson | Birkir Þór Stefánsson | Ratio |
|---|---|---|---|---|
| 2014 | 50 | 03:38:32 | 02:52:04🏅 | 79% |
| 2015 | 50 | 04:05:26 | 03:48:52🏅 | 93% |
| 2018 | 50 | 03:37:05 | 03:17:52🏅 | 91% |
| 2019 | 50 | 03:00:04 | 02:44:59🏅 | 92% |
| 2023 | 50 | 03:33:56 | 02:40:23🏅 | 75% |
| 2024 | 50 | 04:27:34 | 03:39:09🏅 | 82% |
| 6 races | 0 🏅 | 6 🏅 |
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.