| Year | Distance | Rósmundur Númason | Egill Guðmundsson | Ratio |
|---|---|---|---|---|
| 2004 | 20 | 02:00:58🏅 | 02:19:55 | 116% |
| 2005 | 20 | 01:43:12🏅 | 01:58:54 | 115% |
| 2015 | 50 | 04:44:41 | 04:35:42🏅 | 97% |
| 2018 | 50 | 04:18:04 | 03:49:17🏅 | 89% |
| 2019 | 50 | 03:29:29 | 03:23:03🏅 | 97% |
| 2021 | 50 | 06:05:06 | 05:13:04🏅 | 86% |
| 2022 | 50 | 04:41:28 | 04:17:08🏅 | 91% |
| 7 races | 2 🏅 | 5 🏅 |
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.