| Olbia to Alfena | 937.41 mi (1,508.62 km) |
| Olbia to Alijo | 882.81 mi (1,420.75 km) |
| Olbia to Aljustrel | 963.73 mi (1,550.97 km) |
| Olbia to Almada | 1,000.47 mi (1,610.10 km) |
| Olbia to Almargem | 1,003.48 mi (1,614.95 km) |
| Olbia to Almeirim | 963.62 mi (1,550.80 km) |
| Olbia to Amadora | 1,003.45 mi (1,614.90 km) |
| Olbia to Amarante | 913.51 mi (1,470.15 km) |
| Olbia to Amares | 925.76 mi (1,489.87 km) |
| Olbia to Amora | 999.37 mi (1,608.34 km) |
| Olbia to Anadia | 938.68 mi (1,510.66 km) |
| Olbia to Angra do Heroismo | 1,941.29 mi (3,124.21 km) |
| Olbia to Ansiao | 944.23 mi (1,519.59 km) |
| Olbia to Anta | 944.00 mi (1,519.22 km) |
| Olbia to Arcos de Valdevez | 929.47 mi (1,495.83 km) |
