| Year | Distance | Jón Björnsson | Gunnar Pétursson | Ratio |
|---|---|---|---|---|
| 1977 | 21 | 01:10:29🏅 | 01:25:00 | 121% |
| 1978 | 21 | 01:09:25🏅 | 01:24:05 | 121% |
| 1979 | 21 | 01:13:55🏅 | 01:30:25 | 122% |
| 1985 | 21 | 01:15:45🏅 | 01:36:27 | 127% |
| 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.
| Races | Participant |
|---|---|
| 5 | Sigurður Sigurðsson |
| 5 | Arnór Stígsson |
| 5 | Oddur Pétursson |
| 4 | Guðjón H. Höskuldsson |
| 4 | Óskar Kárason |
| 4 | Árni Aðalbjarnarson |
| 4 | Konráð Eggertsson |
| 4 | Þröstur Jóhannesson |
| 4 | Sigurður Jónsson (1919) |