| Year | Distance | Kristján B. Guðmundsson | Sigurður Jónsson (1919) | Ratio |
|---|---|---|---|---|
| 1969 | 21 | 01:37:30 | 01:21:49🏅 | 84% |
| 1971 | 21 | 01:22:04 | 01:13:37🏅 | 90% |
| 1972 | 21 | 01:23:50 | 01:20:36🏅 | 96% |
| 1974 | 21 | 01:23:35🏅 | 01:25:10 | 102% |
| 4 races | 1 🏅 | 3 🏅 |
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 |
|---|---|
| 4 | Guðjón H. Höskuldsson |
| 4 | Elías Sveinsson |
| 4 | Halldór Margeirsson |
| 4 | Oddur Pétursson |