| Port Royal to Alenquer | 3,944.66 mi (6,348.31 km) |
| Port Royal to Alfena | 3,926.20 mi (6,318.61 km) |
| Port Royal to Alijo | 3,977.81 mi (6,401.67 km) |
| Port Royal to Aljustrel | 4,012.32 mi (6,457.20 km) |
| Port Royal to Almada | 3,944.98 mi (6,348.83 km) |
| Port Royal to Almargem | 3,935.73 mi (6,333.94 km) |
| Port Royal to Almeirim | 3,962.06 mi (6,376.32 km) |
| Port Royal to Amadora | 3,940.03 mi (6,340.86 km) |
| Port Royal to Amarante | 3,948.53 mi (6,354.54 km) |
| Port Royal to Amares | 3,928.54 mi (6,322.38 km) |
| Port Royal to Amora | 3,948.12 mi (6,353.88 km) |
| Port Royal to Anadia | 3,946.49 mi (6,351.26 km) |
| Port Royal to Angra do Heroismo | 2,997.39 mi (4,823.84 km) |
| Port Royal to Ansiao | 3,956.80 mi (6,367.86 km) |
| Port Royal to Anta | 3,925.65 mi (6,317.72 km) |
