| South Portland to Acqui Terme | 3,742.28 mi (6,022.62 km) |
| South Portland to Acri | 4,275.51 mi (6,880.77 km) |
| South Portland to Adelfia | 4,237.38 mi (6,819.40 km) |
| South Portland to Adrano | 4,279.82 mi (6,887.71 km) |
| South Portland to Adria | 3,882.06 mi (6,247.57 km) |
| South Portland to Afragola | 4,130.30 mi (6,647.07 km) |
| South Portland to Agliana | 3,877.60 mi (6,240.40 km) |
| South Portland to Agrate Brianza | 3,749.75 mi (6,034.64 km) |
| South Portland to Agrigento | 4,237.60 mi (6,819.76 km) |
| South Portland to Agropoli | 4,181.11 mi (6,728.85 km) |
| South Portland to Ala | 3,813.81 mi (6,137.73 km) |
| South Portland to Alassio | 3,751.90 mi (6,038.09 km) |
| South Portland to Alatri | 4,057.42 mi (6,529.78 km) |
| South Portland to Alba | 3,722.74 mi (5,991.18 km) |
| South Portland to Albano Laziale | 4,027.77 mi (6,482.07 km) |
