| Portet-sur-Garonne to Alfena | 530.49 mi (853.74 km) |
| Portet-sur-Garonne to Alijo | 478.68 mi (770.36 km) |
| Portet-sur-Garonne to Aljustrel | 632.76 mi (1,018.34 km) |
| Portet-sur-Garonne to Almada | 643.03 mi (1,034.85 km) |
| Portet-sur-Garonne to Almargem | 641.58 mi (1,032.53 km) |
| Portet-sur-Garonne to Almeirim | 598.84 mi (963.73 km) |
| Portet-sur-Garonne to Amadora | 644.29 mi (1,036.88 km) |
| Portet-sur-Garonne to Amarante | 507.52 mi (816.77 km) |
| Portet-sur-Garonne to Amares | 512.43 mi (824.67 km) |
| Portet-sur-Garonne to Amora | 643.41 mi (1,035.47 km) |
| Portet-sur-Garonne to Anadia | 548.15 mi (882.17 km) |
| Portet-sur-Garonne to Angra do Heroismo | 1,519.86 mi (2,445.97 km) |
| Portet-sur-Garonne to Ansiao | 564.78 mi (908.92 km) |
| Portet-sur-Garonne to Anta | 541.12 mi (870.85 km) |
| Portet-sur-Garonne to Arcos de Valdevez | 511.90 mi (823.83 km) |
