| Year | Distance | Jón Björnsson | Óskar Kárason | Ratio |
|---|---|---|---|---|
| 1976 | 21 | 01:15:53 | 01:14:42🏅 | 98% |
| 1977 | 21 | 01:10:29 | 01:10:27🏅 | 100% |
| 1978 | 21 | 01:09:25🏅 | 01:16:20 | 110% |
| 1979 | 21 | 01:13:55🏅 | 01:22:30 | 112% |
| 4 races | 2 🏅 | 2 🏅 |
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.
| Races | Participant |
|---|---|
| 5 | Sigurður Sigurðsson |
| 5 | Arnór Stígsson |
| 5 | Oddur Pétursson |
| 4 | Guðjón H. Höskuldsson |
| 4 | Árni Aðalbjarnarson |
| 4 | Konráð Eggertsson |
| 4 | Þröstur Jóhannesson |
| 4 | Gunnar Pétursson |
| 4 | Sigurður Jónsson (1919) |