| Port Royal to Arcos de Valdevez | 3,919.96 mi (6,308.56 km) |
| Port Royal to Arcozelo | 3,924.00 mi (6,315.06 km) |
| Port Royal to Arganil | 3,969.91 mi (6,388.96 km) |
| Port Royal to Arouca | 3,946.11 mi (6,350.65 km) |
| Port Royal to Arruda dos Vinhos | 3,943.46 mi (6,346.38 km) |
| Port Royal to Aveiro | 3,931.65 mi (6,327.37 km) |
| Port Royal to Aver-o-Mar | 3,910.89 mi (6,293.97 km) |
| Port Royal to Aves | 3,933.57 mi (6,330.46 km) |
| Port Royal to Azambuja | 3,952.00 mi (6,360.13 km) |
| Port Royal to Baiao | 3,952.14 mi (6,360.35 km) |
| Port Royal to Barcelos | 3,916.35 mi (6,302.75 km) |
| Port Royal to Barreiro | 3,949.97 mi (6,356.87 km) |
| Port Royal to Batalha | 3,943.55 mi (6,346.54 km) |
| Port Royal to Beja | 4,024.44 mi (6,476.71 km) |
| Port Royal to Belas | 3,937.19 mi (6,336.30 km) |
