| Port Arthur to Arcos de Valdevez | 4,663.66 mi (7,505.43 km) |
| Port Arthur to Arcozelo | 4,672.32 mi (7,519.36 km) |
| Port Arthur to Arganil | 4,721.81 mi (7,599.02 km) |
| Port Arthur to Arouca | 4,694.54 mi (7,555.13 km) |
| Port Arthur to Arruda dos Vinhos | 4,702.76 mi (7,568.36 km) |
| Port Arthur to Aveiro | 4,682.21 mi (7,535.28 km) |
| Port Arthur to Aver-o-Mar | 4,657.51 mi (7,495.53 km) |
| Port Arthur to Aves | 4,679.35 mi (7,530.69 km) |
| Port Arthur to Azambuja | 4,710.65 mi (7,581.06 km) |
| Port Arthur to Baiao | 4,699.04 mi (7,562.37 km) |
| Port Arthur to Barcelos | 4,662.14 mi (7,502.99 km) |
| Port Arthur to Barreiro | 4,710.75 mi (7,581.22 km) |
| Port Arthur to Batalha | 4,699.29 mi (7,562.78 km) |
| Port Arthur to Beja | 4,786.57 mi (7,703.24 km) |
| Port Arthur to Belas | 4,697.73 mi (7,560.26 km) |
