| Year | Distance | Birkir Þór Stefánsson | Guðmundur Jens Jóhannsson | Ratio |
|---|---|---|---|---|
| 2006 | 50 | 02:41:01🏅 | 03:57:01 | 147% |
| 2009 | 50 | 02:58:15🏅 | 04:01:34 | 136% |
| 2018 | 50 | 03:17:52🏅 | 05:01:43 | 152% |
| 2023 | 50 | 02:40:23🏅 | 04:52:51 | 183% |
| 4 races | 4 🏅 | 0 🏅 |
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.