| Year | Distance | Rósmundur Númason | Unnsteinn Jónsson | Ratio |
|---|---|---|---|---|
| 2015 | 50 | 04:44:41 | 04:05:26🏅 | 86% |
| 2018 | 50 | 04:18:04 | 03:37:05🏅 | 84% |
| 2019 | 50 | 03:29:29 | 03:00:04🏅 | 86% |
| 2022 | 50 | 04:41:28 | 03:55:18🏅 | 84% |
| 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.