| Year | Distance | Halldór Margeirsson | Anna Gunnlaugsdóttir | Ratio |
|---|---|---|---|---|
| 1977 | 21 | 01:24:17🏅 | 02:36:39 | 186% |
| 1978 | 21 | 01:20:00🏅 | 02:18:02 | 173% |
| 1980 | 21 | 01:24:10🏅 | 01:55:47 | 138% |
| 1983 | 21 | 01:16:55🏅 | 01:31:25 | 119% |
| 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.