| Hafnarfjordhur to Novi di Modena | 1,829.40 mi (2,944.13 km) |
| Hafnarfjordhur to Novi Ligure | 1,782.97 mi (2,869.41 km) |
| Hafnarfjordhur to Nuoro | 2,064.93 mi (3,323.19 km) |
| Hafnarfjordhur to Occhiobello | 1,845.59 mi (2,970.20 km) |
| Hafnarfjordhur to Oderzo | 1,820.24 mi (2,929.40 km) |
| Hafnarfjordhur to Oggiono | 1,737.17 mi (2,795.70 km) |
| Hafnarfjordhur to Olbia | 2,032.18 mi (3,270.48 km) |
| Hafnarfjordhur to Oleggio | 1,729.51 mi (2,783.38 km) |
| Hafnarfjordhur to Olgiate Comasco | 1,727.30 mi (2,779.82 km) |
| Hafnarfjordhur to Olgiate Olona | 1,733.94 mi (2,790.51 km) |
| Hafnarfjordhur to Omegna | 1,707.43 mi (2,747.84 km) |
| Hafnarfjordhur to Opera | 1,757.14 mi (2,827.84 km) |
| Hafnarfjordhur to Oppeano | 1,813.11 mi (2,917.92 km) |
| Hafnarfjordhur to Orbassano | 1,736.98 mi (2,795.40 km) |
| Hafnarfjordhur to Orbetello | 1,982.67 mi (3,190.79 km) |
