| Haugesund to Orbetello | 1,201.80 mi (1,934.11 km) |
| Haugesund to Oria | 1,413.84 mi (2,275.36 km) |
| Haugesund to Oristano | 1,357.73 mi (2,185.05 km) |
| Haugesund to Orta Nova | 1,329.38 mi (2,139.44 km) |
| Haugesund to Orte | 1,211.86 mi (1,950.30 km) |
| Haugesund to Ortona | 1,243.36 mi (2,001.00 km) |
| Haugesund to Orvieto | 1,191.53 mi (1,917.58 km) |
| Haugesund to Orzinuovi | 989.37 mi (1,592.24 km) |
| Haugesund to Osimo | 1,155.79 mi (1,860.07 km) |
| Haugesund to Ospitaletto | 979.95 mi (1,577.07 km) |
| Haugesund to Ostuni | 1,397.71 mi (2,249.39 km) |
| Haugesund to Ottaviano | 1,344.67 mi (2,164.04 km) |
| Haugesund to Ovada | 1,032.60 mi (1,661.81 km) |
| Haugesund to Ozieri | 1,313.05 mi (2,113.15 km) |
| Haugesund to Paceco | 1,517.25 mi (2,441.78 km) |
